diff --git a/vendor/google.golang.org/protobuf/reflect/protodesc/desc.go b/vendor/google.golang.org/protobuf/reflect/protodesc/desc.go
new file mode 100644
index 0000000..e4dfb12
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/reflect/protodesc/desc.go
@@ -0,0 +1,276 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package protodesc provides functionality for converting
+// FileDescriptorProto messages to/from protoreflect.FileDescriptor values.
+//
+// The google.protobuf.FileDescriptorProto is a protobuf message that describes
+// the type information for a .proto file in a form that is easily serializable.
+// The protoreflect.FileDescriptor is a more structured representation of
+// the FileDescriptorProto message where references and remote dependencies
+// can be directly followed.
+package protodesc
+
+import (
+	"google.golang.org/protobuf/internal/errors"
+	"google.golang.org/protobuf/internal/filedesc"
+	"google.golang.org/protobuf/internal/pragma"
+	"google.golang.org/protobuf/internal/strs"
+	"google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+
+	"google.golang.org/protobuf/types/descriptorpb"
+)
+
+// Resolver is the resolver used by NewFile to resolve dependencies.
+// The enums and messages provided must belong to some parent file,
+// which is also registered.
+//
+// It is implemented by protoregistry.Files.
+type Resolver interface {
+	FindFileByPath(string) (protoreflect.FileDescriptor, error)
+	FindDescriptorByName(protoreflect.FullName) (protoreflect.Descriptor, error)
+}
+
+// FileOptions configures the construction of file descriptors.
+type FileOptions struct {
+	pragma.NoUnkeyedLiterals
+
+	// AllowUnresolvable configures New to permissively allow unresolvable
+	// file, enum, or message dependencies. Unresolved dependencies are replaced
+	// by placeholder equivalents.
+	//
+	// The following dependencies may be left unresolved:
+	//	• Resolving an imported file.
+	//	• Resolving the type for a message field or extension field.
+	//	If the kind of the field is unknown, then a placeholder is used for both
+	//	the Enum and Message accessors on the protoreflect.FieldDescriptor.
+	//	• Resolving an enum value set as the default for an optional enum field.
+	//	If unresolvable, the protoreflect.FieldDescriptor.Default is set to the
+	//	first value in the associated enum (or zero if the also enum dependency
+	//	is also unresolvable). The protoreflect.FieldDescriptor.DefaultEnumValue
+	//	is populated with a placeholder.
+	//	• Resolving the extended message type for an extension field.
+	//	• Resolving the input or output message type for a service method.
+	//
+	// If the unresolved dependency uses a relative name,
+	// then the placeholder will contain an invalid FullName with a "*." prefix,
+	// indicating that the starting prefix of the full name is unknown.
+	AllowUnresolvable bool
+}
+
+// NewFile creates a new protoreflect.FileDescriptor from the provided
+// file descriptor message. See FileOptions.New for more information.
+func NewFile(fd *descriptorpb.FileDescriptorProto, r Resolver) (protoreflect.FileDescriptor, error) {
+	return FileOptions{}.New(fd, r)
+}
+
+// NewFiles creates a new protoregistry.Files from the provided
+// FileDescriptorSet message. See FileOptions.NewFiles for more information.
+func NewFiles(fd *descriptorpb.FileDescriptorSet) (*protoregistry.Files, error) {
+	return FileOptions{}.NewFiles(fd)
+}
+
+// New creates a new protoreflect.FileDescriptor from the provided
+// file descriptor message. The file must represent a valid proto file according
+// to protobuf semantics. The returned descriptor is a deep copy of the input.
+//
+// Any imported files, enum types, or message types referenced in the file are
+// resolved using the provided registry. When looking up an import file path,
+// the path must be unique. The newly created file descriptor is not registered
+// back into the provided file registry.
+func (o FileOptions) New(fd *descriptorpb.FileDescriptorProto, r Resolver) (protoreflect.FileDescriptor, error) {
+	if r == nil {
+		r = (*protoregistry.Files)(nil) // empty resolver
+	}
+
+	// Handle the file descriptor content.
+	f := &filedesc.File{L2: &filedesc.FileL2{}}
+	switch fd.GetSyntax() {
+	case "proto2", "":
+		f.L1.Syntax = protoreflect.Proto2
+	case "proto3":
+		f.L1.Syntax = protoreflect.Proto3
+	default:
+		return nil, errors.New("invalid syntax: %q", fd.GetSyntax())
+	}
+	f.L1.Path = fd.GetName()
+	if f.L1.Path == "" {
+		return nil, errors.New("file path must be populated")
+	}
+	f.L1.Package = protoreflect.FullName(fd.GetPackage())
+	if !f.L1.Package.IsValid() && f.L1.Package != "" {
+		return nil, errors.New("invalid package: %q", f.L1.Package)
+	}
+	if opts := fd.GetOptions(); opts != nil {
+		opts = proto.Clone(opts).(*descriptorpb.FileOptions)
+		f.L2.Options = func() protoreflect.ProtoMessage { return opts }
+	}
+
+	f.L2.Imports = make(filedesc.FileImports, len(fd.GetDependency()))
+	for _, i := range fd.GetPublicDependency() {
+		if !(0 <= i && int(i) < len(f.L2.Imports)) || f.L2.Imports[i].IsPublic {
+			return nil, errors.New("invalid or duplicate public import index: %d", i)
+		}
+		f.L2.Imports[i].IsPublic = true
+	}
+	for _, i := range fd.GetWeakDependency() {
+		if !(0 <= i && int(i) < len(f.L2.Imports)) || f.L2.Imports[i].IsWeak {
+			return nil, errors.New("invalid or duplicate weak import index: %d", i)
+		}
+		f.L2.Imports[i].IsWeak = true
+	}
+	imps := importSet{f.Path(): true}
+	for i, path := range fd.GetDependency() {
+		imp := &f.L2.Imports[i]
+		f, err := r.FindFileByPath(path)
+		if err == protoregistry.NotFound && (o.AllowUnresolvable || imp.IsWeak) {
+			f = filedesc.PlaceholderFile(path)
+		} else if err != nil {
+			return nil, errors.New("could not resolve import %q: %v", path, err)
+		}
+		imp.FileDescriptor = f
+
+		if imps[imp.Path()] {
+			return nil, errors.New("already imported %q", path)
+		}
+		imps[imp.Path()] = true
+	}
+	for i := range fd.GetDependency() {
+		imp := &f.L2.Imports[i]
+		imps.importPublic(imp.Imports())
+	}
+
+	// Handle source locations.
+	f.L2.Locations.File = f
+	for _, loc := range fd.GetSourceCodeInfo().GetLocation() {
+		var l protoreflect.SourceLocation
+		// TODO: Validate that the path points to an actual declaration?
+		l.Path = protoreflect.SourcePath(loc.GetPath())
+		s := loc.GetSpan()
+		switch len(s) {
+		case 3:
+			l.StartLine, l.StartColumn, l.EndLine, l.EndColumn = int(s[0]), int(s[1]), int(s[0]), int(s[2])
+		case 4:
+			l.StartLine, l.StartColumn, l.EndLine, l.EndColumn = int(s[0]), int(s[1]), int(s[2]), int(s[3])
+		default:
+			return nil, errors.New("invalid span: %v", s)
+		}
+		// TODO: Validate that the span information is sensible?
+		// See https://github.com/protocolbuffers/protobuf/issues/6378.
+		if false && (l.EndLine < l.StartLine || l.StartLine < 0 || l.StartColumn < 0 || l.EndColumn < 0 ||
+			(l.StartLine == l.EndLine && l.EndColumn <= l.StartColumn)) {
+			return nil, errors.New("invalid span: %v", s)
+		}
+		l.LeadingDetachedComments = loc.GetLeadingDetachedComments()
+		l.LeadingComments = loc.GetLeadingComments()
+		l.TrailingComments = loc.GetTrailingComments()
+		f.L2.Locations.List = append(f.L2.Locations.List, l)
+	}
+
+	// Step 1: Allocate and derive the names for all declarations.
+	// This copies all fields from the descriptor proto except:
+	//	google.protobuf.FieldDescriptorProto.type_name
+	//	google.protobuf.FieldDescriptorProto.default_value
+	//	google.protobuf.FieldDescriptorProto.oneof_index
+	//	google.protobuf.FieldDescriptorProto.extendee
+	//	google.protobuf.MethodDescriptorProto.input
+	//	google.protobuf.MethodDescriptorProto.output
+	var err error
+	sb := new(strs.Builder)
+	r1 := make(descsByName)
+	if f.L1.Enums.List, err = r1.initEnumDeclarations(fd.GetEnumType(), f, sb); err != nil {
+		return nil, err
+	}
+	if f.L1.Messages.List, err = r1.initMessagesDeclarations(fd.GetMessageType(), f, sb); err != nil {
+		return nil, err
+	}
+	if f.L1.Extensions.List, err = r1.initExtensionDeclarations(fd.GetExtension(), f, sb); err != nil {
+		return nil, err
+	}
+	if f.L1.Services.List, err = r1.initServiceDeclarations(fd.GetService(), f, sb); err != nil {
+		return nil, err
+	}
+
+	// Step 2: Resolve every dependency reference not handled by step 1.
+	r2 := &resolver{local: r1, remote: r, imports: imps, allowUnresolvable: o.AllowUnresolvable}
+	if err := r2.resolveMessageDependencies(f.L1.Messages.List, fd.GetMessageType()); err != nil {
+		return nil, err
+	}
+	if err := r2.resolveExtensionDependencies(f.L1.Extensions.List, fd.GetExtension()); err != nil {
+		return nil, err
+	}
+	if err := r2.resolveServiceDependencies(f.L1.Services.List, fd.GetService()); err != nil {
+		return nil, err
+	}
+
+	// Step 3: Validate every enum, message, and extension declaration.
+	if err := validateEnumDeclarations(f.L1.Enums.List, fd.GetEnumType()); err != nil {
+		return nil, err
+	}
+	if err := validateMessageDeclarations(f.L1.Messages.List, fd.GetMessageType()); err != nil {
+		return nil, err
+	}
+	if err := validateExtensionDeclarations(f.L1.Extensions.List, fd.GetExtension()); err != nil {
+		return nil, err
+	}
+
+	return f, nil
+}
+
+type importSet map[string]bool
+
+func (is importSet) importPublic(imps protoreflect.FileImports) {
+	for i := 0; i < imps.Len(); i++ {
+		if imp := imps.Get(i); imp.IsPublic {
+			is[imp.Path()] = true
+			is.importPublic(imp.Imports())
+		}
+	}
+}
+
+// NewFiles creates a new protoregistry.Files from the provided
+// FileDescriptorSet message. The descriptor set must include only
+// valid files according to protobuf semantics. The returned descriptors
+// are a deep copy of the input.
+func (o FileOptions) NewFiles(fds *descriptorpb.FileDescriptorSet) (*protoregistry.Files, error) {
+	files := make(map[string]*descriptorpb.FileDescriptorProto)
+	for _, fd := range fds.File {
+		if _, ok := files[fd.GetName()]; ok {
+			return nil, errors.New("file appears multiple times: %q", fd.GetName())
+		}
+		files[fd.GetName()] = fd
+	}
+	r := &protoregistry.Files{}
+	for _, fd := range files {
+		if err := o.addFileDeps(r, fd, files); err != nil {
+			return nil, err
+		}
+	}
+	return r, nil
+}
+func (o FileOptions) addFileDeps(r *protoregistry.Files, fd *descriptorpb.FileDescriptorProto, files map[string]*descriptorpb.FileDescriptorProto) error {
+	// Set the entry to nil while descending into a file's dependencies to detect cycles.
+	files[fd.GetName()] = nil
+	for _, dep := range fd.Dependency {
+		depfd, ok := files[dep]
+		if depfd == nil {
+			if ok {
+				return errors.New("import cycle in file: %q", dep)
+			}
+			continue
+		}
+		if err := o.addFileDeps(r, depfd, files); err != nil {
+			return err
+		}
+	}
+	// Delete the entry once dependencies are processed.
+	delete(files, fd.GetName())
+	f, err := o.New(fd, r)
+	if err != nil {
+		return err
+	}
+	return r.RegisterFile(f)
+}
diff --git a/vendor/google.golang.org/protobuf/reflect/protodesc/desc_init.go b/vendor/google.golang.org/protobuf/reflect/protodesc/desc_init.go
new file mode 100644
index 0000000..37efda1
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/reflect/protodesc/desc_init.go
@@ -0,0 +1,248 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package protodesc
+
+import (
+	"google.golang.org/protobuf/internal/errors"
+	"google.golang.org/protobuf/internal/filedesc"
+	"google.golang.org/protobuf/internal/strs"
+	"google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/reflect/protoreflect"
+
+	"google.golang.org/protobuf/types/descriptorpb"
+)
+
+type descsByName map[protoreflect.FullName]protoreflect.Descriptor
+
+func (r descsByName) initEnumDeclarations(eds []*descriptorpb.EnumDescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (es []filedesc.Enum, err error) {
+	es = make([]filedesc.Enum, len(eds)) // allocate up-front to ensure stable pointers
+	for i, ed := range eds {
+		e := &es[i]
+		e.L2 = new(filedesc.EnumL2)
+		if e.L0, err = r.makeBase(e, parent, ed.GetName(), i, sb); err != nil {
+			return nil, err
+		}
+		if opts := ed.GetOptions(); opts != nil {
+			opts = proto.Clone(opts).(*descriptorpb.EnumOptions)
+			e.L2.Options = func() protoreflect.ProtoMessage { return opts }
+		}
+		for _, s := range ed.GetReservedName() {
+			e.L2.ReservedNames.List = append(e.L2.ReservedNames.List, protoreflect.Name(s))
+		}
+		for _, rr := range ed.GetReservedRange() {
+			e.L2.ReservedRanges.List = append(e.L2.ReservedRanges.List, [2]protoreflect.EnumNumber{
+				protoreflect.EnumNumber(rr.GetStart()),
+				protoreflect.EnumNumber(rr.GetEnd()),
+			})
+		}
+		if e.L2.Values.List, err = r.initEnumValuesFromDescriptorProto(ed.GetValue(), e, sb); err != nil {
+			return nil, err
+		}
+	}
+	return es, nil
+}
+
+func (r descsByName) initEnumValuesFromDescriptorProto(vds []*descriptorpb.EnumValueDescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (vs []filedesc.EnumValue, err error) {
+	vs = make([]filedesc.EnumValue, len(vds)) // allocate up-front to ensure stable pointers
+	for i, vd := range vds {
+		v := &vs[i]
+		if v.L0, err = r.makeBase(v, parent, vd.GetName(), i, sb); err != nil {
+			return nil, err
+		}
+		if opts := vd.GetOptions(); opts != nil {
+			opts = proto.Clone(opts).(*descriptorpb.EnumValueOptions)
+			v.L1.Options = func() protoreflect.ProtoMessage { return opts }
+		}
+		v.L1.Number = protoreflect.EnumNumber(vd.GetNumber())
+	}
+	return vs, nil
+}
+
+func (r descsByName) initMessagesDeclarations(mds []*descriptorpb.DescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (ms []filedesc.Message, err error) {
+	ms = make([]filedesc.Message, len(mds)) // allocate up-front to ensure stable pointers
+	for i, md := range mds {
+		m := &ms[i]
+		m.L2 = new(filedesc.MessageL2)
+		if m.L0, err = r.makeBase(m, parent, md.GetName(), i, sb); err != nil {
+			return nil, err
+		}
+		if opts := md.GetOptions(); opts != nil {
+			opts = proto.Clone(opts).(*descriptorpb.MessageOptions)
+			m.L2.Options = func() protoreflect.ProtoMessage { return opts }
+			m.L1.IsMapEntry = opts.GetMapEntry()
+			m.L1.IsMessageSet = opts.GetMessageSetWireFormat()
+		}
+		for _, s := range md.GetReservedName() {
+			m.L2.ReservedNames.List = append(m.L2.ReservedNames.List, protoreflect.Name(s))
+		}
+		for _, rr := range md.GetReservedRange() {
+			m.L2.ReservedRanges.List = append(m.L2.ReservedRanges.List, [2]protoreflect.FieldNumber{
+				protoreflect.FieldNumber(rr.GetStart()),
+				protoreflect.FieldNumber(rr.GetEnd()),
+			})
+		}
+		for _, xr := range md.GetExtensionRange() {
+			m.L2.ExtensionRanges.List = append(m.L2.ExtensionRanges.List, [2]protoreflect.FieldNumber{
+				protoreflect.FieldNumber(xr.GetStart()),
+				protoreflect.FieldNumber(xr.GetEnd()),
+			})
+			var optsFunc func() protoreflect.ProtoMessage
+			if opts := xr.GetOptions(); opts != nil {
+				opts = proto.Clone(opts).(*descriptorpb.ExtensionRangeOptions)
+				optsFunc = func() protoreflect.ProtoMessage { return opts }
+			}
+			m.L2.ExtensionRangeOptions = append(m.L2.ExtensionRangeOptions, optsFunc)
+		}
+		if m.L2.Fields.List, err = r.initFieldsFromDescriptorProto(md.GetField(), m, sb); err != nil {
+			return nil, err
+		}
+		if m.L2.Oneofs.List, err = r.initOneofsFromDescriptorProto(md.GetOneofDecl(), m, sb); err != nil {
+			return nil, err
+		}
+		if m.L1.Enums.List, err = r.initEnumDeclarations(md.GetEnumType(), m, sb); err != nil {
+			return nil, err
+		}
+		if m.L1.Messages.List, err = r.initMessagesDeclarations(md.GetNestedType(), m, sb); err != nil {
+			return nil, err
+		}
+		if m.L1.Extensions.List, err = r.initExtensionDeclarations(md.GetExtension(), m, sb); err != nil {
+			return nil, err
+		}
+	}
+	return ms, nil
+}
+
+func (r descsByName) initFieldsFromDescriptorProto(fds []*descriptorpb.FieldDescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (fs []filedesc.Field, err error) {
+	fs = make([]filedesc.Field, len(fds)) // allocate up-front to ensure stable pointers
+	for i, fd := range fds {
+		f := &fs[i]
+		if f.L0, err = r.makeBase(f, parent, fd.GetName(), i, sb); err != nil {
+			return nil, err
+		}
+		f.L1.IsProto3Optional = fd.GetProto3Optional()
+		if opts := fd.GetOptions(); opts != nil {
+			opts = proto.Clone(opts).(*descriptorpb.FieldOptions)
+			f.L1.Options = func() protoreflect.ProtoMessage { return opts }
+			f.L1.IsWeak = opts.GetWeak()
+			f.L1.HasPacked = opts.Packed != nil
+			f.L1.IsPacked = opts.GetPacked()
+		}
+		f.L1.Number = protoreflect.FieldNumber(fd.GetNumber())
+		f.L1.Cardinality = protoreflect.Cardinality(fd.GetLabel())
+		if fd.Type != nil {
+			f.L1.Kind = protoreflect.Kind(fd.GetType())
+		}
+		if fd.JsonName != nil {
+			f.L1.StringName.InitJSON(fd.GetJsonName())
+		}
+	}
+	return fs, nil
+}
+
+func (r descsByName) initOneofsFromDescriptorProto(ods []*descriptorpb.OneofDescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (os []filedesc.Oneof, err error) {
+	os = make([]filedesc.Oneof, len(ods)) // allocate up-front to ensure stable pointers
+	for i, od := range ods {
+		o := &os[i]
+		if o.L0, err = r.makeBase(o, parent, od.GetName(), i, sb); err != nil {
+			return nil, err
+		}
+		if opts := od.GetOptions(); opts != nil {
+			opts = proto.Clone(opts).(*descriptorpb.OneofOptions)
+			o.L1.Options = func() protoreflect.ProtoMessage { return opts }
+		}
+	}
+	return os, nil
+}
+
+func (r descsByName) initExtensionDeclarations(xds []*descriptorpb.FieldDescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (xs []filedesc.Extension, err error) {
+	xs = make([]filedesc.Extension, len(xds)) // allocate up-front to ensure stable pointers
+	for i, xd := range xds {
+		x := &xs[i]
+		x.L2 = new(filedesc.ExtensionL2)
+		if x.L0, err = r.makeBase(x, parent, xd.GetName(), i, sb); err != nil {
+			return nil, err
+		}
+		if opts := xd.GetOptions(); opts != nil {
+			opts = proto.Clone(opts).(*descriptorpb.FieldOptions)
+			x.L2.Options = func() protoreflect.ProtoMessage { return opts }
+			x.L2.IsPacked = opts.GetPacked()
+		}
+		x.L1.Number = protoreflect.FieldNumber(xd.GetNumber())
+		x.L1.Cardinality = protoreflect.Cardinality(xd.GetLabel())
+		if xd.Type != nil {
+			x.L1.Kind = protoreflect.Kind(xd.GetType())
+		}
+		if xd.JsonName != nil {
+			x.L2.StringName.InitJSON(xd.GetJsonName())
+		}
+	}
+	return xs, nil
+}
+
+func (r descsByName) initServiceDeclarations(sds []*descriptorpb.ServiceDescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (ss []filedesc.Service, err error) {
+	ss = make([]filedesc.Service, len(sds)) // allocate up-front to ensure stable pointers
+	for i, sd := range sds {
+		s := &ss[i]
+		s.L2 = new(filedesc.ServiceL2)
+		if s.L0, err = r.makeBase(s, parent, sd.GetName(), i, sb); err != nil {
+			return nil, err
+		}
+		if opts := sd.GetOptions(); opts != nil {
+			opts = proto.Clone(opts).(*descriptorpb.ServiceOptions)
+			s.L2.Options = func() protoreflect.ProtoMessage { return opts }
+		}
+		if s.L2.Methods.List, err = r.initMethodsFromDescriptorProto(sd.GetMethod(), s, sb); err != nil {
+			return nil, err
+		}
+	}
+	return ss, nil
+}
+
+func (r descsByName) initMethodsFromDescriptorProto(mds []*descriptorpb.MethodDescriptorProto, parent protoreflect.Descriptor, sb *strs.Builder) (ms []filedesc.Method, err error) {
+	ms = make([]filedesc.Method, len(mds)) // allocate up-front to ensure stable pointers
+	for i, md := range mds {
+		m := &ms[i]
+		if m.L0, err = r.makeBase(m, parent, md.GetName(), i, sb); err != nil {
+			return nil, err
+		}
+		if opts := md.GetOptions(); opts != nil {
+			opts = proto.Clone(opts).(*descriptorpb.MethodOptions)
+			m.L1.Options = func() protoreflect.ProtoMessage { return opts }
+		}
+		m.L1.IsStreamingClient = md.GetClientStreaming()
+		m.L1.IsStreamingServer = md.GetServerStreaming()
+	}
+	return ms, nil
+}
+
+func (r descsByName) makeBase(child, parent protoreflect.Descriptor, name string, idx int, sb *strs.Builder) (filedesc.BaseL0, error) {
+	if !protoreflect.Name(name).IsValid() {
+		return filedesc.BaseL0{}, errors.New("descriptor %q has an invalid nested name: %q", parent.FullName(), name)
+	}
+
+	// Derive the full name of the child.
+	// Note that enum values are a sibling to the enum parent in the namespace.
+	var fullName protoreflect.FullName
+	if _, ok := parent.(protoreflect.EnumDescriptor); ok {
+		fullName = sb.AppendFullName(parent.FullName().Parent(), protoreflect.Name(name))
+	} else {
+		fullName = sb.AppendFullName(parent.FullName(), protoreflect.Name(name))
+	}
+	if _, ok := r[fullName]; ok {
+		return filedesc.BaseL0{}, errors.New("descriptor %q already declared", fullName)
+	}
+	r[fullName] = child
+
+	// TODO: Verify that the full name does not already exist in the resolver?
+	// This is not as critical since most usages of NewFile will register
+	// the created file back into the registry, which will perform this check.
+
+	return filedesc.BaseL0{
+		FullName:   fullName,
+		ParentFile: parent.ParentFile().(*filedesc.File),
+		Parent:     parent,
+		Index:      idx,
+	}, nil
+}
diff --git a/vendor/google.golang.org/protobuf/reflect/protodesc/desc_resolve.go b/vendor/google.golang.org/protobuf/reflect/protodesc/desc_resolve.go
new file mode 100644
index 0000000..cebb36c
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/reflect/protodesc/desc_resolve.go
@@ -0,0 +1,286 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package protodesc
+
+import (
+	"google.golang.org/protobuf/internal/encoding/defval"
+	"google.golang.org/protobuf/internal/errors"
+	"google.golang.org/protobuf/internal/filedesc"
+	"google.golang.org/protobuf/reflect/protoreflect"
+	"google.golang.org/protobuf/reflect/protoregistry"
+
+	"google.golang.org/protobuf/types/descriptorpb"
+)
+
+// resolver is a wrapper around a local registry of declarations within the file
+// and the remote resolver. The remote resolver is restricted to only return
+// descriptors that have been imported.
+type resolver struct {
+	local   descsByName
+	remote  Resolver
+	imports importSet
+
+	allowUnresolvable bool
+}
+
+func (r *resolver) resolveMessageDependencies(ms []filedesc.Message, mds []*descriptorpb.DescriptorProto) (err error) {
+	for i, md := range mds {
+		m := &ms[i]
+		for j, fd := range md.GetField() {
+			f := &m.L2.Fields.List[j]
+			if f.L1.Cardinality == protoreflect.Required {
+				m.L2.RequiredNumbers.List = append(m.L2.RequiredNumbers.List, f.L1.Number)
+			}
+			if fd.OneofIndex != nil {
+				k := int(fd.GetOneofIndex())
+				if !(0 <= k && k < len(md.GetOneofDecl())) {
+					return errors.New("message field %q has an invalid oneof index: %d", f.FullName(), k)
+				}
+				o := &m.L2.Oneofs.List[k]
+				f.L1.ContainingOneof = o
+				o.L1.Fields.List = append(o.L1.Fields.List, f)
+			}
+
+			if f.L1.Kind, f.L1.Enum, f.L1.Message, err = r.findTarget(f.Kind(), f.Parent().FullName(), partialName(fd.GetTypeName()), f.IsWeak()); err != nil {
+				return errors.New("message field %q cannot resolve type: %v", f.FullName(), err)
+			}
+			if fd.DefaultValue != nil {
+				v, ev, err := unmarshalDefault(fd.GetDefaultValue(), f, r.allowUnresolvable)
+				if err != nil {
+					return errors.New("message field %q has invalid default: %v", f.FullName(), err)
+				}
+				f.L1.Default = filedesc.DefaultValue(v, ev)
+			}
+		}
+
+		if err := r.resolveMessageDependencies(m.L1.Messages.List, md.GetNestedType()); err != nil {
+			return err
+		}
+		if err := r.resolveExtensionDependencies(m.L1.Extensions.List, md.GetExtension()); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (r *resolver) resolveExtensionDependencies(xs []filedesc.Extension, xds []*descriptorpb.FieldDescriptorProto) (err error) {
+	for i, xd := range xds {
+		x := &xs[i]
+		if x.L1.Extendee, err = r.findMessageDescriptor(x.Parent().FullName(), partialName(xd.GetExtendee()), false); err != nil {
+			return errors.New("extension field %q cannot resolve extendee: %v", x.FullName(), err)
+		}
+		if x.L1.Kind, x.L2.Enum, x.L2.Message, err = r.findTarget(x.Kind(), x.Parent().FullName(), partialName(xd.GetTypeName()), false); err != nil {
+			return errors.New("extension field %q cannot resolve type: %v", x.FullName(), err)
+		}
+		if xd.DefaultValue != nil {
+			v, ev, err := unmarshalDefault(xd.GetDefaultValue(), x, r.allowUnresolvable)
+			if err != nil {
+				return errors.New("extension field %q has invalid default: %v", x.FullName(), err)
+			}
+			x.L2.Default = filedesc.DefaultValue(v, ev)
+		}
+	}
+	return nil
+}
+
+func (r *resolver) resolveServiceDependencies(ss []filedesc.Service, sds []*descriptorpb.ServiceDescriptorProto) (err error) {
+	for i, sd := range sds {
+		s := &ss[i]
+		for j, md := range sd.GetMethod() {
+			m := &s.L2.Methods.List[j]
+			m.L1.Input, err = r.findMessageDescriptor(m.Parent().FullName(), partialName(md.GetInputType()), false)
+			if err != nil {
+				return errors.New("service method %q cannot resolve input: %v", m.FullName(), err)
+			}
+			m.L1.Output, err = r.findMessageDescriptor(s.FullName(), partialName(md.GetOutputType()), false)
+			if err != nil {
+				return errors.New("service method %q cannot resolve output: %v", m.FullName(), err)
+			}
+		}
+	}
+	return nil
+}
+
+// findTarget finds an enum or message descriptor if k is an enum, message,
+// group, or unknown. If unknown, and the name could be resolved, the kind
+// returned kind is set based on the type of the resolved descriptor.
+func (r *resolver) findTarget(k protoreflect.Kind, scope protoreflect.FullName, ref partialName, isWeak bool) (protoreflect.Kind, protoreflect.EnumDescriptor, protoreflect.MessageDescriptor, error) {
+	switch k {
+	case protoreflect.EnumKind:
+		ed, err := r.findEnumDescriptor(scope, ref, isWeak)
+		if err != nil {
+			return 0, nil, nil, err
+		}
+		return k, ed, nil, nil
+	case protoreflect.MessageKind, protoreflect.GroupKind:
+		md, err := r.findMessageDescriptor(scope, ref, isWeak)
+		if err != nil {
+			return 0, nil, nil, err
+		}
+		return k, nil, md, nil
+	case 0:
+		// Handle unspecified kinds (possible with parsers that operate
+		// on a per-file basis without knowledge of dependencies).
+		d, err := r.findDescriptor(scope, ref)
+		if err == protoregistry.NotFound && (r.allowUnresolvable || isWeak) {
+			return k, filedesc.PlaceholderEnum(ref.FullName()), filedesc.PlaceholderMessage(ref.FullName()), nil
+		} else if err == protoregistry.NotFound {
+			return 0, nil, nil, errors.New("%q not found", ref.FullName())
+		} else if err != nil {
+			return 0, nil, nil, err
+		}
+		switch d := d.(type) {
+		case protoreflect.EnumDescriptor:
+			return protoreflect.EnumKind, d, nil, nil
+		case protoreflect.MessageDescriptor:
+			return protoreflect.MessageKind, nil, d, nil
+		default:
+			return 0, nil, nil, errors.New("unknown kind")
+		}
+	default:
+		if ref != "" {
+			return 0, nil, nil, errors.New("target name cannot be specified for %v", k)
+		}
+		if !k.IsValid() {
+			return 0, nil, nil, errors.New("invalid kind: %d", k)
+		}
+		return k, nil, nil, nil
+	}
+}
+
+// findDescriptor finds the descriptor by name,
+// which may be a relative name within some scope.
+//
+// Suppose the scope was "fizz.buzz" and the reference was "Foo.Bar",
+// then the following full names are searched:
+//	* fizz.buzz.Foo.Bar
+//	* fizz.Foo.Bar
+//	* Foo.Bar
+func (r *resolver) findDescriptor(scope protoreflect.FullName, ref partialName) (protoreflect.Descriptor, error) {
+	if !ref.IsValid() {
+		return nil, errors.New("invalid name reference: %q", ref)
+	}
+	if ref.IsFull() {
+		scope, ref = "", ref[1:]
+	}
+	var foundButNotImported protoreflect.Descriptor
+	for {
+		// Derive the full name to search.
+		s := protoreflect.FullName(ref)
+		if scope != "" {
+			s = scope + "." + s
+		}
+
+		// Check the current file for the descriptor.
+		if d, ok := r.local[s]; ok {
+			return d, nil
+		}
+
+		// Check the remote registry for the descriptor.
+		d, err := r.remote.FindDescriptorByName(s)
+		if err == nil {
+			// Only allow descriptors covered by one of the imports.
+			if r.imports[d.ParentFile().Path()] {
+				return d, nil
+			}
+			foundButNotImported = d
+		} else if err != protoregistry.NotFound {
+			return nil, errors.Wrap(err, "%q", s)
+		}
+
+		// Continue on at a higher level of scoping.
+		if scope == "" {
+			if d := foundButNotImported; d != nil {
+				return nil, errors.New("resolved %q, but %q is not imported", d.FullName(), d.ParentFile().Path())
+			}
+			return nil, protoregistry.NotFound
+		}
+		scope = scope.Parent()
+	}
+}
+
+func (r *resolver) findEnumDescriptor(scope protoreflect.FullName, ref partialName, isWeak bool) (protoreflect.EnumDescriptor, error) {
+	d, err := r.findDescriptor(scope, ref)
+	if err == protoregistry.NotFound && (r.allowUnresolvable || isWeak) {
+		return filedesc.PlaceholderEnum(ref.FullName()), nil
+	} else if err == protoregistry.NotFound {
+		return nil, errors.New("%q not found", ref.FullName())
+	} else if err != nil {
+		return nil, err
+	}
+	ed, ok := d.(protoreflect.EnumDescriptor)
+	if !ok {
+		return nil, errors.New("resolved %q, but it is not an enum", d.FullName())
+	}
+	return ed, nil
+}
+
+func (r *resolver) findMessageDescriptor(scope protoreflect.FullName, ref partialName, isWeak bool) (protoreflect.MessageDescriptor, error) {
+	d, err := r.findDescriptor(scope, ref)
+	if err == protoregistry.NotFound && (r.allowUnresolvable || isWeak) {
+		return filedesc.PlaceholderMessage(ref.FullName()), nil
+	} else if err == protoregistry.NotFound {
+		return nil, errors.New("%q not found", ref.FullName())
+	} else if err != nil {
+		return nil, err
+	}
+	md, ok := d.(protoreflect.MessageDescriptor)
+	if !ok {
+		return nil, errors.New("resolved %q, but it is not an message", d.FullName())
+	}
+	return md, nil
+}
+
+// partialName is the partial name. A leading dot means that the name is full,
+// otherwise the name is relative to some current scope.
+// See google.protobuf.FieldDescriptorProto.type_name.
+type partialName string
+
+func (s partialName) IsFull() bool {
+	return len(s) > 0 && s[0] == '.'
+}
+
+func (s partialName) IsValid() bool {
+	if s.IsFull() {
+		return protoreflect.FullName(s[1:]).IsValid()
+	}
+	return protoreflect.FullName(s).IsValid()
+}
+
+const unknownPrefix = "*."
+
+// FullName converts the partial name to a full name on a best-effort basis.
+// If relative, it creates an invalid full name, using a "*." prefix
+// to indicate that the start of the full name is unknown.
+func (s partialName) FullName() protoreflect.FullName {
+	if s.IsFull() {
+		return protoreflect.FullName(s[1:])
+	}
+	return protoreflect.FullName(unknownPrefix + s)
+}
+
+func unmarshalDefault(s string, fd protoreflect.FieldDescriptor, allowUnresolvable bool) (protoreflect.Value, protoreflect.EnumValueDescriptor, error) {
+	var evs protoreflect.EnumValueDescriptors
+	if fd.Enum() != nil {
+		evs = fd.Enum().Values()
+	}
+	v, ev, err := defval.Unmarshal(s, fd.Kind(), evs, defval.Descriptor)
+	if err != nil && allowUnresolvable && evs != nil && protoreflect.Name(s).IsValid() {
+		v = protoreflect.ValueOfEnum(0)
+		if evs.Len() > 0 {
+			v = protoreflect.ValueOfEnum(evs.Get(0).Number())
+		}
+		ev = filedesc.PlaceholderEnumValue(fd.Enum().FullName().Parent().Append(protoreflect.Name(s)))
+	} else if err != nil {
+		return v, ev, err
+	}
+	if fd.Syntax() == protoreflect.Proto3 {
+		return v, ev, errors.New("cannot be specified under proto3 semantics")
+	}
+	if fd.Kind() == protoreflect.MessageKind || fd.Kind() == protoreflect.GroupKind || fd.Cardinality() == protoreflect.Repeated {
+		return v, ev, errors.New("cannot be specified on composite types")
+	}
+	return v, ev, nil
+}
diff --git a/vendor/google.golang.org/protobuf/reflect/protodesc/desc_validate.go b/vendor/google.golang.org/protobuf/reflect/protodesc/desc_validate.go
new file mode 100644
index 0000000..9af1d56
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/reflect/protodesc/desc_validate.go
@@ -0,0 +1,374 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package protodesc
+
+import (
+	"strings"
+	"unicode"
+
+	"google.golang.org/protobuf/encoding/protowire"
+	"google.golang.org/protobuf/internal/errors"
+	"google.golang.org/protobuf/internal/filedesc"
+	"google.golang.org/protobuf/internal/flags"
+	"google.golang.org/protobuf/internal/genid"
+	"google.golang.org/protobuf/internal/strs"
+	"google.golang.org/protobuf/reflect/protoreflect"
+
+	"google.golang.org/protobuf/types/descriptorpb"
+)
+
+func validateEnumDeclarations(es []filedesc.Enum, eds []*descriptorpb.EnumDescriptorProto) error {
+	for i, ed := range eds {
+		e := &es[i]
+		if err := e.L2.ReservedNames.CheckValid(); err != nil {
+			return errors.New("enum %q reserved names has %v", e.FullName(), err)
+		}
+		if err := e.L2.ReservedRanges.CheckValid(); err != nil {
+			return errors.New("enum %q reserved ranges has %v", e.FullName(), err)
+		}
+		if len(ed.GetValue()) == 0 {
+			return errors.New("enum %q must contain at least one value declaration", e.FullName())
+		}
+		allowAlias := ed.GetOptions().GetAllowAlias()
+		foundAlias := false
+		for i := 0; i < e.Values().Len(); i++ {
+			v1 := e.Values().Get(i)
+			if v2 := e.Values().ByNumber(v1.Number()); v1 != v2 {
+				foundAlias = true
+				if !allowAlias {
+					return errors.New("enum %q has conflicting non-aliased values on number %d: %q with %q", e.FullName(), v1.Number(), v1.Name(), v2.Name())
+				}
+			}
+		}
+		if allowAlias && !foundAlias {
+			return errors.New("enum %q allows aliases, but none were found", e.FullName())
+		}
+		if e.Syntax() == protoreflect.Proto3 {
+			if v := e.Values().Get(0); v.Number() != 0 {
+				return errors.New("enum %q using proto3 semantics must have zero number for the first value", v.FullName())
+			}
+			// Verify that value names in proto3 do not conflict if the
+			// case-insensitive prefix is removed.
+			// See protoc v3.8.0: src/google/protobuf/descriptor.cc:4991-5055
+			names := map[string]protoreflect.EnumValueDescriptor{}
+			prefix := strings.Replace(strings.ToLower(string(e.Name())), "_", "", -1)
+			for i := 0; i < e.Values().Len(); i++ {
+				v1 := e.Values().Get(i)
+				s := strs.EnumValueName(strs.TrimEnumPrefix(string(v1.Name()), prefix))
+				if v2, ok := names[s]; ok && v1.Number() != v2.Number() {
+					return errors.New("enum %q using proto3 semantics has conflict: %q with %q", e.FullName(), v1.Name(), v2.Name())
+				}
+				names[s] = v1
+			}
+		}
+
+		for j, vd := range ed.GetValue() {
+			v := &e.L2.Values.List[j]
+			if vd.Number == nil {
+				return errors.New("enum value %q must have a specified number", v.FullName())
+			}
+			if e.L2.ReservedNames.Has(v.Name()) {
+				return errors.New("enum value %q must not use reserved name", v.FullName())
+			}
+			if e.L2.ReservedRanges.Has(v.Number()) {
+				return errors.New("enum value %q must not use reserved number %d", v.FullName(), v.Number())
+			}
+		}
+	}
+	return nil
+}
+
+func validateMessageDeclarations(ms []filedesc.Message, mds []*descriptorpb.DescriptorProto) error {
+	for i, md := range mds {
+		m := &ms[i]
+
+		// Handle the message descriptor itself.
+		isMessageSet := md.GetOptions().GetMessageSetWireFormat()
+		if err := m.L2.ReservedNames.CheckValid(); err != nil {
+			return errors.New("message %q reserved names has %v", m.FullName(), err)
+		}
+		if err := m.L2.ReservedRanges.CheckValid(isMessageSet); err != nil {
+			return errors.New("message %q reserved ranges has %v", m.FullName(), err)
+		}
+		if err := m.L2.ExtensionRanges.CheckValid(isMessageSet); err != nil {
+			return errors.New("message %q extension ranges has %v", m.FullName(), err)
+		}
+		if err := (*filedesc.FieldRanges).CheckOverlap(&m.L2.ReservedRanges, &m.L2.ExtensionRanges); err != nil {
+			return errors.New("message %q reserved and extension ranges has %v", m.FullName(), err)
+		}
+		for i := 0; i < m.Fields().Len(); i++ {
+			f1 := m.Fields().Get(i)
+			if f2 := m.Fields().ByNumber(f1.Number()); f1 != f2 {
+				return errors.New("message %q has conflicting fields: %q with %q", m.FullName(), f1.Name(), f2.Name())
+			}
+		}
+		if isMessageSet && !flags.ProtoLegacy {
+			return errors.New("message %q is a MessageSet, which is a legacy proto1 feature that is no longer supported", m.FullName())
+		}
+		if isMessageSet && (m.Syntax() != protoreflect.Proto2 || m.Fields().Len() > 0 || m.ExtensionRanges().Len() == 0) {
+			return errors.New("message %q is an invalid proto1 MessageSet", m.FullName())
+		}
+		if m.Syntax() == protoreflect.Proto3 {
+			if m.ExtensionRanges().Len() > 0 {
+				return errors.New("message %q using proto3 semantics cannot have extension ranges", m.FullName())
+			}
+			// Verify that field names in proto3 do not conflict if lowercased
+			// with all underscores removed.
+			// See protoc v3.8.0: src/google/protobuf/descriptor.cc:5830-5847
+			names := map[string]protoreflect.FieldDescriptor{}
+			for i := 0; i < m.Fields().Len(); i++ {
+				f1 := m.Fields().Get(i)
+				s := strings.Replace(strings.ToLower(string(f1.Name())), "_", "", -1)
+				if f2, ok := names[s]; ok {
+					return errors.New("message %q using proto3 semantics has conflict: %q with %q", m.FullName(), f1.Name(), f2.Name())
+				}
+				names[s] = f1
+			}
+		}
+
+		for j, fd := range md.GetField() {
+			f := &m.L2.Fields.List[j]
+			if m.L2.ReservedNames.Has(f.Name()) {
+				return errors.New("message field %q must not use reserved name", f.FullName())
+			}
+			if !f.Number().IsValid() {
+				return errors.New("message field %q has an invalid number: %d", f.FullName(), f.Number())
+			}
+			if !f.Cardinality().IsValid() {
+				return errors.New("message field %q has an invalid cardinality: %d", f.FullName(), f.Cardinality())
+			}
+			if m.L2.ReservedRanges.Has(f.Number()) {
+				return errors.New("message field %q must not use reserved number %d", f.FullName(), f.Number())
+			}
+			if m.L2.ExtensionRanges.Has(f.Number()) {
+				return errors.New("message field %q with number %d in extension range", f.FullName(), f.Number())
+			}
+			if fd.Extendee != nil {
+				return errors.New("message field %q may not have extendee: %q", f.FullName(), fd.GetExtendee())
+			}
+			if f.L1.IsProto3Optional {
+				if f.Syntax() != protoreflect.Proto3 {
+					return errors.New("message field %q under proto3 optional semantics must be specified in the proto3 syntax", f.FullName())
+				}
+				if f.Cardinality() != protoreflect.Optional {
+					return errors.New("message field %q under proto3 optional semantics must have optional cardinality", f.FullName())
+				}
+				if f.ContainingOneof() != nil && f.ContainingOneof().Fields().Len() != 1 {
+					return errors.New("message field %q under proto3 optional semantics must be within a single element oneof", f.FullName())
+				}
+			}
+			if f.IsWeak() && !flags.ProtoLegacy {
+				return errors.New("message field %q is a weak field, which is a legacy proto1 feature that is no longer supported", f.FullName())
+			}
+			if f.IsWeak() && (f.Syntax() != protoreflect.Proto2 || !isOptionalMessage(f) || f.ContainingOneof() != nil) {
+				return errors.New("message field %q may only be weak for an optional message", f.FullName())
+			}
+			if f.IsPacked() && !isPackable(f) {
+				return errors.New("message field %q is not packable", f.FullName())
+			}
+			if err := checkValidGroup(f); err != nil {
+				return errors.New("message field %q is an invalid group: %v", f.FullName(), err)
+			}
+			if err := checkValidMap(f); err != nil {
+				return errors.New("message field %q is an invalid map: %v", f.FullName(), err)
+			}
+			if f.Syntax() == protoreflect.Proto3 {
+				if f.Cardinality() == protoreflect.Required {
+					return errors.New("message field %q using proto3 semantics cannot be required", f.FullName())
+				}
+				if f.Enum() != nil && !f.Enum().IsPlaceholder() && f.Enum().Syntax() != protoreflect.Proto3 {
+					return errors.New("message field %q using proto3 semantics may only depend on a proto3 enum", f.FullName())
+				}
+			}
+		}
+		seenSynthetic := false // synthetic oneofs for proto3 optional must come after real oneofs
+		for j := range md.GetOneofDecl() {
+			o := &m.L2.Oneofs.List[j]
+			if o.Fields().Len() == 0 {
+				return errors.New("message oneof %q must contain at least one field declaration", o.FullName())
+			}
+			if n := o.Fields().Len(); n-1 != (o.Fields().Get(n-1).Index() - o.Fields().Get(0).Index()) {
+				return errors.New("message oneof %q must have consecutively declared fields", o.FullName())
+			}
+
+			if o.IsSynthetic() {
+				seenSynthetic = true
+				continue
+			}
+			if !o.IsSynthetic() && seenSynthetic {
+				return errors.New("message oneof %q must be declared before synthetic oneofs", o.FullName())
+			}
+
+			for i := 0; i < o.Fields().Len(); i++ {
+				f := o.Fields().Get(i)
+				if f.Cardinality() != protoreflect.Optional {
+					return errors.New("message field %q belongs in a oneof and must be optional", f.FullName())
+				}
+				if f.IsWeak() {
+					return errors.New("message field %q belongs in a oneof and must not be a weak reference", f.FullName())
+				}
+			}
+		}
+
+		if err := validateEnumDeclarations(m.L1.Enums.List, md.GetEnumType()); err != nil {
+			return err
+		}
+		if err := validateMessageDeclarations(m.L1.Messages.List, md.GetNestedType()); err != nil {
+			return err
+		}
+		if err := validateExtensionDeclarations(m.L1.Extensions.List, md.GetExtension()); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func validateExtensionDeclarations(xs []filedesc.Extension, xds []*descriptorpb.FieldDescriptorProto) error {
+	for i, xd := range xds {
+		x := &xs[i]
+		// NOTE: Avoid using the IsValid method since extensions to MessageSet
+		// may have a field number higher than normal. This check only verifies
+		// that the number is not negative or reserved. We check again later
+		// if we know that the extendee is definitely not a MessageSet.
+		if n := x.Number(); n < 0 || (protowire.FirstReservedNumber <= n && n <= protowire.LastReservedNumber) {
+			return errors.New("extension field %q has an invalid number: %d", x.FullName(), x.Number())
+		}
+		if !x.Cardinality().IsValid() || x.Cardinality() == protoreflect.Required {
+			return errors.New("extension field %q has an invalid cardinality: %d", x.FullName(), x.Cardinality())
+		}
+		if xd.JsonName != nil {
+			// A bug in older versions of protoc would always populate the
+			// "json_name" option for extensions when it is meaningless.
+			// When it did so, it would always use the camel-cased field name.
+			if xd.GetJsonName() != strs.JSONCamelCase(string(x.Name())) {
+				return errors.New("extension field %q may not have an explicitly set JSON name: %q", x.FullName(), xd.GetJsonName())
+			}
+		}
+		if xd.OneofIndex != nil {
+			return errors.New("extension field %q may not be part of a oneof", x.FullName())
+		}
+		if md := x.ContainingMessage(); !md.IsPlaceholder() {
+			if !md.ExtensionRanges().Has(x.Number()) {
+				return errors.New("extension field %q extends %q with non-extension field number: %d", x.FullName(), md.FullName(), x.Number())
+			}
+			isMessageSet := md.Options().(*descriptorpb.MessageOptions).GetMessageSetWireFormat()
+			if isMessageSet && !isOptionalMessage(x) {
+				return errors.New("extension field %q extends MessageSet and must be an optional message", x.FullName())
+			}
+			if !isMessageSet && !x.Number().IsValid() {
+				return errors.New("extension field %q has an invalid number: %d", x.FullName(), x.Number())
+			}
+		}
+		if xd.GetOptions().GetWeak() {
+			return errors.New("extension field %q cannot be a weak reference", x.FullName())
+		}
+		if x.IsPacked() && !isPackable(x) {
+			return errors.New("extension field %q is not packable", x.FullName())
+		}
+		if err := checkValidGroup(x); err != nil {
+			return errors.New("extension field %q is an invalid group: %v", x.FullName(), err)
+		}
+		if md := x.Message(); md != nil && md.IsMapEntry() {
+			return errors.New("extension field %q cannot be a map entry", x.FullName())
+		}
+		if x.Syntax() == protoreflect.Proto3 {
+			switch x.ContainingMessage().FullName() {
+			case (*descriptorpb.FileOptions)(nil).ProtoReflect().Descriptor().FullName():
+			case (*descriptorpb.EnumOptions)(nil).ProtoReflect().Descriptor().FullName():
+			case (*descriptorpb.EnumValueOptions)(nil).ProtoReflect().Descriptor().FullName():
+			case (*descriptorpb.MessageOptions)(nil).ProtoReflect().Descriptor().FullName():
+			case (*descriptorpb.FieldOptions)(nil).ProtoReflect().Descriptor().FullName():
+			case (*descriptorpb.OneofOptions)(nil).ProtoReflect().Descriptor().FullName():
+			case (*descriptorpb.ExtensionRangeOptions)(nil).ProtoReflect().Descriptor().FullName():
+			case (*descriptorpb.ServiceOptions)(nil).ProtoReflect().Descriptor().FullName():
+			case (*descriptorpb.MethodOptions)(nil).ProtoReflect().Descriptor().FullName():
+			default:
+				return errors.New("extension field %q cannot be declared in proto3 unless extended descriptor options", x.FullName())
+			}
+		}
+	}
+	return nil
+}
+
+// isOptionalMessage reports whether this is an optional message.
+// If the kind is unknown, it is assumed to be a message.
+func isOptionalMessage(fd protoreflect.FieldDescriptor) bool {
+	return (fd.Kind() == 0 || fd.Kind() == protoreflect.MessageKind) && fd.Cardinality() == protoreflect.Optional
+}
+
+// isPackable checks whether the pack option can be specified.
+func isPackable(fd protoreflect.FieldDescriptor) bool {
+	switch fd.Kind() {
+	case protoreflect.StringKind, protoreflect.BytesKind, protoreflect.MessageKind, protoreflect.GroupKind:
+		return false
+	}
+	return fd.IsList()
+}
+
+// checkValidGroup reports whether fd is a valid group according to the same
+// rules that protoc imposes.
+func checkValidGroup(fd protoreflect.FieldDescriptor) error {
+	md := fd.Message()
+	switch {
+	case fd.Kind() != protoreflect.GroupKind:
+		return nil
+	case fd.Syntax() != protoreflect.Proto2:
+		return errors.New("invalid under proto2 semantics")
+	case md == nil || md.IsPlaceholder():
+		return errors.New("message must be resolvable")
+	case fd.FullName().Parent() != md.FullName().Parent():
+		return errors.New("message and field must be declared in the same scope")
+	case !unicode.IsUpper(rune(md.Name()[0])):
+		return errors.New("message name must start with an uppercase")
+	case fd.Name() != protoreflect.Name(strings.ToLower(string(md.Name()))):
+		return errors.New("field name must be lowercased form of the message name")
+	}
+	return nil
+}
+
+// checkValidMap checks whether the field is a valid map according to the same
+// rules that protoc imposes.
+// See protoc v3.8.0: src/google/protobuf/descriptor.cc:6045-6115
+func checkValidMap(fd protoreflect.FieldDescriptor) error {
+	md := fd.Message()
+	switch {
+	case md == nil || !md.IsMapEntry():
+		return nil
+	case fd.FullName().Parent() != md.FullName().Parent():
+		return errors.New("message and field must be declared in the same scope")
+	case md.Name() != protoreflect.Name(strs.MapEntryName(string(fd.Name()))):
+		return errors.New("incorrect implicit map entry name")
+	case fd.Cardinality() != protoreflect.Repeated:
+		return errors.New("field must be repeated")
+	case md.Fields().Len() != 2:
+		return errors.New("message must have exactly two fields")
+	case md.ExtensionRanges().Len() > 0:
+		return errors.New("message must not have any extension ranges")
+	case md.Enums().Len()+md.Messages().Len()+md.Extensions().Len() > 0:
+		return errors.New("message must not have any nested declarations")
+	}
+	kf := md.Fields().Get(0)
+	vf := md.Fields().Get(1)
+	switch {
+	case kf.Name() != genid.MapEntry_Key_field_name || kf.Number() != genid.MapEntry_Key_field_number || kf.Cardinality() != protoreflect.Optional || kf.ContainingOneof() != nil || kf.HasDefault():
+		return errors.New("invalid key field")
+	case vf.Name() != genid.MapEntry_Value_field_name || vf.Number() != genid.MapEntry_Value_field_number || vf.Cardinality() != protoreflect.Optional || vf.ContainingOneof() != nil || vf.HasDefault():
+		return errors.New("invalid value field")
+	}
+	switch kf.Kind() {
+	case protoreflect.BoolKind: // bool
+	case protoreflect.Int32Kind, protoreflect.Sint32Kind, protoreflect.Sfixed32Kind: // int32
+	case protoreflect.Int64Kind, protoreflect.Sint64Kind, protoreflect.Sfixed64Kind: // int64
+	case protoreflect.Uint32Kind, protoreflect.Fixed32Kind: // uint32
+	case protoreflect.Uint64Kind, protoreflect.Fixed64Kind: // uint64
+	case protoreflect.StringKind: // string
+	default:
+		return errors.New("invalid key kind: %v", kf.Kind())
+	}
+	if e := vf.Enum(); e != nil && e.Values().Len() > 0 && e.Values().Get(0).Number() != 0 {
+		return errors.New("map enum value must have zero number for the first value")
+	}
+	return nil
+}
diff --git a/vendor/google.golang.org/protobuf/reflect/protodesc/proto.go b/vendor/google.golang.org/protobuf/reflect/protodesc/proto.go
new file mode 100644
index 0000000..a7c5cef
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/reflect/protodesc/proto.go
@@ -0,0 +1,252 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package protodesc
+
+import (
+	"fmt"
+	"strings"
+
+	"google.golang.org/protobuf/internal/encoding/defval"
+	"google.golang.org/protobuf/internal/strs"
+	"google.golang.org/protobuf/proto"
+	"google.golang.org/protobuf/reflect/protoreflect"
+
+	"google.golang.org/protobuf/types/descriptorpb"
+)
+
+// ToFileDescriptorProto copies a protoreflect.FileDescriptor into a
+// google.protobuf.FileDescriptorProto message.
+func ToFileDescriptorProto(file protoreflect.FileDescriptor) *descriptorpb.FileDescriptorProto {
+	p := &descriptorpb.FileDescriptorProto{
+		Name:    proto.String(file.Path()),
+		Options: proto.Clone(file.Options()).(*descriptorpb.FileOptions),
+	}
+	if file.Package() != "" {
+		p.Package = proto.String(string(file.Package()))
+	}
+	for i, imports := 0, file.Imports(); i < imports.Len(); i++ {
+		imp := imports.Get(i)
+		p.Dependency = append(p.Dependency, imp.Path())
+		if imp.IsPublic {
+			p.PublicDependency = append(p.PublicDependency, int32(i))
+		}
+		if imp.IsWeak {
+			p.WeakDependency = append(p.WeakDependency, int32(i))
+		}
+	}
+	for i, locs := 0, file.SourceLocations(); i < locs.Len(); i++ {
+		loc := locs.Get(i)
+		l := &descriptorpb.SourceCodeInfo_Location{}
+		l.Path = append(l.Path, loc.Path...)
+		if loc.StartLine == loc.EndLine {
+			l.Span = []int32{int32(loc.StartLine), int32(loc.StartColumn), int32(loc.EndColumn)}
+		} else {
+			l.Span = []int32{int32(loc.StartLine), int32(loc.StartColumn), int32(loc.EndLine), int32(loc.EndColumn)}
+		}
+		l.LeadingDetachedComments = append([]string(nil), loc.LeadingDetachedComments...)
+		if loc.LeadingComments != "" {
+			l.LeadingComments = proto.String(loc.LeadingComments)
+		}
+		if loc.TrailingComments != "" {
+			l.TrailingComments = proto.String(loc.TrailingComments)
+		}
+		if p.SourceCodeInfo == nil {
+			p.SourceCodeInfo = &descriptorpb.SourceCodeInfo{}
+		}
+		p.SourceCodeInfo.Location = append(p.SourceCodeInfo.Location, l)
+
+	}
+	for i, messages := 0, file.Messages(); i < messages.Len(); i++ {
+		p.MessageType = append(p.MessageType, ToDescriptorProto(messages.Get(i)))
+	}
+	for i, enums := 0, file.Enums(); i < enums.Len(); i++ {
+		p.EnumType = append(p.EnumType, ToEnumDescriptorProto(enums.Get(i)))
+	}
+	for i, services := 0, file.Services(); i < services.Len(); i++ {
+		p.Service = append(p.Service, ToServiceDescriptorProto(services.Get(i)))
+	}
+	for i, exts := 0, file.Extensions(); i < exts.Len(); i++ {
+		p.Extension = append(p.Extension, ToFieldDescriptorProto(exts.Get(i)))
+	}
+	if syntax := file.Syntax(); syntax != protoreflect.Proto2 {
+		p.Syntax = proto.String(file.Syntax().String())
+	}
+	return p
+}
+
+// ToDescriptorProto copies a protoreflect.MessageDescriptor into a
+// google.protobuf.DescriptorProto message.
+func ToDescriptorProto(message protoreflect.MessageDescriptor) *descriptorpb.DescriptorProto {
+	p := &descriptorpb.DescriptorProto{
+		Name:    proto.String(string(message.Name())),
+		Options: proto.Clone(message.Options()).(*descriptorpb.MessageOptions),
+	}
+	for i, fields := 0, message.Fields(); i < fields.Len(); i++ {
+		p.Field = append(p.Field, ToFieldDescriptorProto(fields.Get(i)))
+	}
+	for i, exts := 0, message.Extensions(); i < exts.Len(); i++ {
+		p.Extension = append(p.Extension, ToFieldDescriptorProto(exts.Get(i)))
+	}
+	for i, messages := 0, message.Messages(); i < messages.Len(); i++ {
+		p.NestedType = append(p.NestedType, ToDescriptorProto(messages.Get(i)))
+	}
+	for i, enums := 0, message.Enums(); i < enums.Len(); i++ {
+		p.EnumType = append(p.EnumType, ToEnumDescriptorProto(enums.Get(i)))
+	}
+	for i, xranges := 0, message.ExtensionRanges(); i < xranges.Len(); i++ {
+		xrange := xranges.Get(i)
+		p.ExtensionRange = append(p.ExtensionRange, &descriptorpb.DescriptorProto_ExtensionRange{
+			Start:   proto.Int32(int32(xrange[0])),
+			End:     proto.Int32(int32(xrange[1])),
+			Options: proto.Clone(message.ExtensionRangeOptions(i)).(*descriptorpb.ExtensionRangeOptions),
+		})
+	}
+	for i, oneofs := 0, message.Oneofs(); i < oneofs.Len(); i++ {
+		p.OneofDecl = append(p.OneofDecl, ToOneofDescriptorProto(oneofs.Get(i)))
+	}
+	for i, ranges := 0, message.ReservedRanges(); i < ranges.Len(); i++ {
+		rrange := ranges.Get(i)
+		p.ReservedRange = append(p.ReservedRange, &descriptorpb.DescriptorProto_ReservedRange{
+			Start: proto.Int32(int32(rrange[0])),
+			End:   proto.Int32(int32(rrange[1])),
+		})
+	}
+	for i, names := 0, message.ReservedNames(); i < names.Len(); i++ {
+		p.ReservedName = append(p.ReservedName, string(names.Get(i)))
+	}
+	return p
+}
+
+// ToFieldDescriptorProto copies a protoreflect.FieldDescriptor into a
+// google.protobuf.FieldDescriptorProto message.
+func ToFieldDescriptorProto(field protoreflect.FieldDescriptor) *descriptorpb.FieldDescriptorProto {
+	p := &descriptorpb.FieldDescriptorProto{
+		Name:    proto.String(string(field.Name())),
+		Number:  proto.Int32(int32(field.Number())),
+		Label:   descriptorpb.FieldDescriptorProto_Label(field.Cardinality()).Enum(),
+		Options: proto.Clone(field.Options()).(*descriptorpb.FieldOptions),
+	}
+	if field.IsExtension() {
+		p.Extendee = fullNameOf(field.ContainingMessage())
+	}
+	if field.Kind().IsValid() {
+		p.Type = descriptorpb.FieldDescriptorProto_Type(field.Kind()).Enum()
+	}
+	if field.Enum() != nil {
+		p.TypeName = fullNameOf(field.Enum())
+	}
+	if field.Message() != nil {
+		p.TypeName = fullNameOf(field.Message())
+	}
+	if field.HasJSONName() {
+		// A bug in older versions of protoc would always populate the
+		// "json_name" option for extensions when it is meaningless.
+		// When it did so, it would always use the camel-cased field name.
+		if field.IsExtension() {
+			p.JsonName = proto.String(strs.JSONCamelCase(string(field.Name())))
+		} else {
+			p.JsonName = proto.String(field.JSONName())
+		}
+	}
+	if field.Syntax() == protoreflect.Proto3 && field.HasOptionalKeyword() {
+		p.Proto3Optional = proto.Bool(true)
+	}
+	if field.HasDefault() {
+		def, err := defval.Marshal(field.Default(), field.DefaultEnumValue(), field.Kind(), defval.Descriptor)
+		if err != nil && field.DefaultEnumValue() != nil {
+			def = string(field.DefaultEnumValue().Name()) // occurs for unresolved enum values
+		} else if err != nil {
+			panic(fmt.Sprintf("%v: %v", field.FullName(), err))
+		}
+		p.DefaultValue = proto.String(def)
+	}
+	if oneof := field.ContainingOneof(); oneof != nil {
+		p.OneofIndex = proto.Int32(int32(oneof.Index()))
+	}
+	return p
+}
+
+// ToOneofDescriptorProto copies a protoreflect.OneofDescriptor into a
+// google.protobuf.OneofDescriptorProto message.
+func ToOneofDescriptorProto(oneof protoreflect.OneofDescriptor) *descriptorpb.OneofDescriptorProto {
+	return &descriptorpb.OneofDescriptorProto{
+		Name:    proto.String(string(oneof.Name())),
+		Options: proto.Clone(oneof.Options()).(*descriptorpb.OneofOptions),
+	}
+}
+
+// ToEnumDescriptorProto copies a protoreflect.EnumDescriptor into a
+// google.protobuf.EnumDescriptorProto message.
+func ToEnumDescriptorProto(enum protoreflect.EnumDescriptor) *descriptorpb.EnumDescriptorProto {
+	p := &descriptorpb.EnumDescriptorProto{
+		Name:    proto.String(string(enum.Name())),
+		Options: proto.Clone(enum.Options()).(*descriptorpb.EnumOptions),
+	}
+	for i, values := 0, enum.Values(); i < values.Len(); i++ {
+		p.Value = append(p.Value, ToEnumValueDescriptorProto(values.Get(i)))
+	}
+	for i, ranges := 0, enum.ReservedRanges(); i < ranges.Len(); i++ {
+		rrange := ranges.Get(i)
+		p.ReservedRange = append(p.ReservedRange, &descriptorpb.EnumDescriptorProto_EnumReservedRange{
+			Start: proto.Int32(int32(rrange[0])),
+			End:   proto.Int32(int32(rrange[1])),
+		})
+	}
+	for i, names := 0, enum.ReservedNames(); i < names.Len(); i++ {
+		p.ReservedName = append(p.ReservedName, string(names.Get(i)))
+	}
+	return p
+}
+
+// ToEnumValueDescriptorProto copies a protoreflect.EnumValueDescriptor into a
+// google.protobuf.EnumValueDescriptorProto message.
+func ToEnumValueDescriptorProto(value protoreflect.EnumValueDescriptor) *descriptorpb.EnumValueDescriptorProto {
+	return &descriptorpb.EnumValueDescriptorProto{
+		Name:    proto.String(string(value.Name())),
+		Number:  proto.Int32(int32(value.Number())),
+		Options: proto.Clone(value.Options()).(*descriptorpb.EnumValueOptions),
+	}
+}
+
+// ToServiceDescriptorProto copies a protoreflect.ServiceDescriptor into a
+// google.protobuf.ServiceDescriptorProto message.
+func ToServiceDescriptorProto(service protoreflect.ServiceDescriptor) *descriptorpb.ServiceDescriptorProto {
+	p := &descriptorpb.ServiceDescriptorProto{
+		Name:    proto.String(string(service.Name())),
+		Options: proto.Clone(service.Options()).(*descriptorpb.ServiceOptions),
+	}
+	for i, methods := 0, service.Methods(); i < methods.Len(); i++ {
+		p.Method = append(p.Method, ToMethodDescriptorProto(methods.Get(i)))
+	}
+	return p
+}
+
+// ToMethodDescriptorProto copies a protoreflect.MethodDescriptor into a
+// google.protobuf.MethodDescriptorProto message.
+func ToMethodDescriptorProto(method protoreflect.MethodDescriptor) *descriptorpb.MethodDescriptorProto {
+	p := &descriptorpb.MethodDescriptorProto{
+		Name:       proto.String(string(method.Name())),
+		InputType:  fullNameOf(method.Input()),
+		OutputType: fullNameOf(method.Output()),
+		Options:    proto.Clone(method.Options()).(*descriptorpb.MethodOptions),
+	}
+	if method.IsStreamingClient() {
+		p.ClientStreaming = proto.Bool(true)
+	}
+	if method.IsStreamingServer() {
+		p.ServerStreaming = proto.Bool(true)
+	}
+	return p
+}
+
+func fullNameOf(d protoreflect.Descriptor) *string {
+	if d == nil {
+		return nil
+	}
+	if strings.HasPrefix(string(d.FullName()), unknownPrefix) {
+		return proto.String(string(d.FullName()[len(unknownPrefix):]))
+	}
+	return proto.String("." + string(d.FullName()))
+}
diff --git a/vendor/google.golang.org/protobuf/reflect/protoreflect/proto.go b/vendor/google.golang.org/protobuf/reflect/protoreflect/proto.go
index b669a4e..dd85915 100644
--- a/vendor/google.golang.org/protobuf/reflect/protoreflect/proto.go
+++ b/vendor/google.golang.org/protobuf/reflect/protoreflect/proto.go
@@ -128,7 +128,6 @@
 
 import (
 	"fmt"
-	"regexp"
 	"strings"
 
 	"google.golang.org/protobuf/encoding/protowire"
@@ -408,19 +407,14 @@
 	doNotImplement
 }
 
-var (
-	regexName     = regexp.MustCompile(`^[_a-zA-Z][_a-zA-Z0-9]*$`)
-	regexFullName = regexp.MustCompile(`^[_a-zA-Z][_a-zA-Z0-9]*(\.[_a-zA-Z][_a-zA-Z0-9]*)*$`)
-)
-
 // Name is the short name for a proto declaration. This is not the name
 // as used in Go source code, which might not be identical to the proto name.
 type Name string // e.g., "Kind"
 
-// IsValid reports whether n is a syntactically valid name.
+// IsValid reports whether s is a syntactically valid name.
 // An empty name is invalid.
-func (n Name) IsValid() bool {
-	return regexName.MatchString(string(n))
+func (s Name) IsValid() bool {
+	return consumeIdent(string(s)) == len(s)
 }
 
 // Names represent a list of names.
@@ -443,10 +437,42 @@
 // This should not have any leading or trailing dots.
 type FullName string // e.g., "google.protobuf.Field.Kind"
 
-// IsValid reports whether n is a syntactically valid full name.
+// IsValid reports whether s is a syntactically valid full name.
 // An empty full name is invalid.
-func (n FullName) IsValid() bool {
-	return regexFullName.MatchString(string(n))
+func (s FullName) IsValid() bool {
+	i := consumeIdent(string(s))
+	if i < 0 {
+		return false
+	}
+	for len(s) > i {
+		if s[i] != '.' {
+			return false
+		}
+		i++
+		n := consumeIdent(string(s[i:]))
+		if n < 0 {
+			return false
+		}
+		i += n
+	}
+	return true
+}
+
+func consumeIdent(s string) (i int) {
+	if len(s) == 0 || !isLetter(s[i]) {
+		return -1
+	}
+	i++
+	for len(s) > i && isLetterDigit(s[i]) {
+		i++
+	}
+	return i
+}
+func isLetter(c byte) bool {
+	return c == '_' || ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z')
+}
+func isLetterDigit(c byte) bool {
+	return isLetter(c) || ('0' <= c && c <= '9')
 }
 
 // Name returns the short name, which is the last identifier segment.
diff --git a/vendor/google.golang.org/protobuf/reflect/protoreflect/source.go b/vendor/google.golang.org/protobuf/reflect/protoreflect/source.go
index 32ea3d9..121ba3a 100644
--- a/vendor/google.golang.org/protobuf/reflect/protoreflect/source.go
+++ b/vendor/google.golang.org/protobuf/reflect/protoreflect/source.go
@@ -4,6 +4,10 @@
 
 package protoreflect
 
+import (
+	"strconv"
+)
+
 // SourceLocations is a list of source locations.
 type SourceLocations interface {
 	// Len reports the number of source locations in the proto file.
@@ -11,9 +15,20 @@
 	// Get returns the ith SourceLocation. It panics if out of bounds.
 	Get(int) SourceLocation
 
-	doNotImplement
+	// ByPath returns the SourceLocation for the given path,
+	// returning the first location if multiple exist for the same path.
+	// If multiple locations exist for the same path,
+	// then SourceLocation.Next index can be used to identify the
+	// index of the next SourceLocation.
+	// If no location exists for this path, it returns the zero value.
+	ByPath(path SourcePath) SourceLocation
 
-	// TODO: Add ByPath and ByDescriptor helper methods.
+	// ByDescriptor returns the SourceLocation for the given descriptor,
+	// returning the first location if multiple exist for the same path.
+	// If no location exists for this descriptor, it returns the zero value.
+	ByDescriptor(desc Descriptor) SourceLocation
+
+	doNotImplement
 }
 
 // SourceLocation describes a source location and
@@ -39,6 +54,10 @@
 	LeadingComments string
 	// TrailingComments is the trailing attached comment for the declaration.
 	TrailingComments string
+
+	// Next is an index into SourceLocations for the next source location that
+	// has the same Path. It is zero if there is no next location.
+	Next int
 }
 
 // SourcePath identifies part of a file descriptor for a source location.
@@ -48,5 +67,62 @@
 // See google.protobuf.SourceCodeInfo.Location.path.
 type SourcePath []int32
 
-// TODO: Add SourcePath.String method to pretty-print the path. For example:
-//	".message_type[6].nested_type[15].field[3]"
+// Equal reports whether p1 equals p2.
+func (p1 SourcePath) Equal(p2 SourcePath) bool {
+	if len(p1) != len(p2) {
+		return false
+	}
+	for i := range p1 {
+		if p1[i] != p2[i] {
+			return false
+		}
+	}
+	return true
+}
+
+// String formats the path in a humanly readable manner.
+// The output is guaranteed to be deterministic,
+// making it suitable for use as a key into a Go map.
+// It is not guaranteed to be stable as the exact output could change
+// in a future version of this module.
+//
+// Example output:
+//	.message_type[6].nested_type[15].field[3]
+func (p SourcePath) String() string {
+	b := p.appendFileDescriptorProto(nil)
+	for _, i := range p {
+		b = append(b, '.')
+		b = strconv.AppendInt(b, int64(i), 10)
+	}
+	return string(b)
+}
+
+type appendFunc func(*SourcePath, []byte) []byte
+
+func (p *SourcePath) appendSingularField(b []byte, name string, f appendFunc) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	b = append(b, '.')
+	b = append(b, name...)
+	*p = (*p)[1:]
+	if f != nil {
+		b = f(p, b)
+	}
+	return b
+}
+
+func (p *SourcePath) appendRepeatedField(b []byte, name string, f appendFunc) []byte {
+	b = p.appendSingularField(b, name, nil)
+	if len(*p) == 0 || (*p)[0] < 0 {
+		return b
+	}
+	b = append(b, '[')
+	b = strconv.AppendUint(b, uint64((*p)[0]), 10)
+	b = append(b, ']')
+	*p = (*p)[1:]
+	if f != nil {
+		b = f(p, b)
+	}
+	return b
+}
diff --git a/vendor/google.golang.org/protobuf/reflect/protoreflect/source_gen.go b/vendor/google.golang.org/protobuf/reflect/protoreflect/source_gen.go
new file mode 100644
index 0000000..b03c122
--- /dev/null
+++ b/vendor/google.golang.org/protobuf/reflect/protoreflect/source_gen.go
@@ -0,0 +1,461 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by generate-protos. DO NOT EDIT.
+
+package protoreflect
+
+func (p *SourcePath) appendFileDescriptorProto(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "name", nil)
+	case 2:
+		b = p.appendSingularField(b, "package", nil)
+	case 3:
+		b = p.appendRepeatedField(b, "dependency", nil)
+	case 10:
+		b = p.appendRepeatedField(b, "public_dependency", nil)
+	case 11:
+		b = p.appendRepeatedField(b, "weak_dependency", nil)
+	case 4:
+		b = p.appendRepeatedField(b, "message_type", (*SourcePath).appendDescriptorProto)
+	case 5:
+		b = p.appendRepeatedField(b, "enum_type", (*SourcePath).appendEnumDescriptorProto)
+	case 6:
+		b = p.appendRepeatedField(b, "service", (*SourcePath).appendServiceDescriptorProto)
+	case 7:
+		b = p.appendRepeatedField(b, "extension", (*SourcePath).appendFieldDescriptorProto)
+	case 8:
+		b = p.appendSingularField(b, "options", (*SourcePath).appendFileOptions)
+	case 9:
+		b = p.appendSingularField(b, "source_code_info", (*SourcePath).appendSourceCodeInfo)
+	case 12:
+		b = p.appendSingularField(b, "syntax", nil)
+	}
+	return b
+}
+
+func (p *SourcePath) appendDescriptorProto(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "name", nil)
+	case 2:
+		b = p.appendRepeatedField(b, "field", (*SourcePath).appendFieldDescriptorProto)
+	case 6:
+		b = p.appendRepeatedField(b, "extension", (*SourcePath).appendFieldDescriptorProto)
+	case 3:
+		b = p.appendRepeatedField(b, "nested_type", (*SourcePath).appendDescriptorProto)
+	case 4:
+		b = p.appendRepeatedField(b, "enum_type", (*SourcePath).appendEnumDescriptorProto)
+	case 5:
+		b = p.appendRepeatedField(b, "extension_range", (*SourcePath).appendDescriptorProto_ExtensionRange)
+	case 8:
+		b = p.appendRepeatedField(b, "oneof_decl", (*SourcePath).appendOneofDescriptorProto)
+	case 7:
+		b = p.appendSingularField(b, "options", (*SourcePath).appendMessageOptions)
+	case 9:
+		b = p.appendRepeatedField(b, "reserved_range", (*SourcePath).appendDescriptorProto_ReservedRange)
+	case 10:
+		b = p.appendRepeatedField(b, "reserved_name", nil)
+	}
+	return b
+}
+
+func (p *SourcePath) appendEnumDescriptorProto(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "name", nil)
+	case 2:
+		b = p.appendRepeatedField(b, "value", (*SourcePath).appendEnumValueDescriptorProto)
+	case 3:
+		b = p.appendSingularField(b, "options", (*SourcePath).appendEnumOptions)
+	case 4:
+		b = p.appendRepeatedField(b, "reserved_range", (*SourcePath).appendEnumDescriptorProto_EnumReservedRange)
+	case 5:
+		b = p.appendRepeatedField(b, "reserved_name", nil)
+	}
+	return b
+}
+
+func (p *SourcePath) appendServiceDescriptorProto(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "name", nil)
+	case 2:
+		b = p.appendRepeatedField(b, "method", (*SourcePath).appendMethodDescriptorProto)
+	case 3:
+		b = p.appendSingularField(b, "options", (*SourcePath).appendServiceOptions)
+	}
+	return b
+}
+
+func (p *SourcePath) appendFieldDescriptorProto(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "name", nil)
+	case 3:
+		b = p.appendSingularField(b, "number", nil)
+	case 4:
+		b = p.appendSingularField(b, "label", nil)
+	case 5:
+		b = p.appendSingularField(b, "type", nil)
+	case 6:
+		b = p.appendSingularField(b, "type_name", nil)
+	case 2:
+		b = p.appendSingularField(b, "extendee", nil)
+	case 7:
+		b = p.appendSingularField(b, "default_value", nil)
+	case 9:
+		b = p.appendSingularField(b, "oneof_index", nil)
+	case 10:
+		b = p.appendSingularField(b, "json_name", nil)
+	case 8:
+		b = p.appendSingularField(b, "options", (*SourcePath).appendFieldOptions)
+	case 17:
+		b = p.appendSingularField(b, "proto3_optional", nil)
+	}
+	return b
+}
+
+func (p *SourcePath) appendFileOptions(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "java_package", nil)
+	case 8:
+		b = p.appendSingularField(b, "java_outer_classname", nil)
+	case 10:
+		b = p.appendSingularField(b, "java_multiple_files", nil)
+	case 20:
+		b = p.appendSingularField(b, "java_generate_equals_and_hash", nil)
+	case 27:
+		b = p.appendSingularField(b, "java_string_check_utf8", nil)
+	case 9:
+		b = p.appendSingularField(b, "optimize_for", nil)
+	case 11:
+		b = p.appendSingularField(b, "go_package", nil)
+	case 16:
+		b = p.appendSingularField(b, "cc_generic_services", nil)
+	case 17:
+		b = p.appendSingularField(b, "java_generic_services", nil)
+	case 18:
+		b = p.appendSingularField(b, "py_generic_services", nil)
+	case 42:
+		b = p.appendSingularField(b, "php_generic_services", nil)
+	case 23:
+		b = p.appendSingularField(b, "deprecated", nil)
+	case 31:
+		b = p.appendSingularField(b, "cc_enable_arenas", nil)
+	case 36:
+		b = p.appendSingularField(b, "objc_class_prefix", nil)
+	case 37:
+		b = p.appendSingularField(b, "csharp_namespace", nil)
+	case 39:
+		b = p.appendSingularField(b, "swift_prefix", nil)
+	case 40:
+		b = p.appendSingularField(b, "php_class_prefix", nil)
+	case 41:
+		b = p.appendSingularField(b, "php_namespace", nil)
+	case 44:
+		b = p.appendSingularField(b, "php_metadata_namespace", nil)
+	case 45:
+		b = p.appendSingularField(b, "ruby_package", nil)
+	case 999:
+		b = p.appendRepeatedField(b, "uninterpreted_option", (*SourcePath).appendUninterpretedOption)
+	}
+	return b
+}
+
+func (p *SourcePath) appendSourceCodeInfo(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendRepeatedField(b, "location", (*SourcePath).appendSourceCodeInfo_Location)
+	}
+	return b
+}
+
+func (p *SourcePath) appendDescriptorProto_ExtensionRange(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "start", nil)
+	case 2:
+		b = p.appendSingularField(b, "end", nil)
+	case 3:
+		b = p.appendSingularField(b, "options", (*SourcePath).appendExtensionRangeOptions)
+	}
+	return b
+}
+
+func (p *SourcePath) appendOneofDescriptorProto(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "name", nil)
+	case 2:
+		b = p.appendSingularField(b, "options", (*SourcePath).appendOneofOptions)
+	}
+	return b
+}
+
+func (p *SourcePath) appendMessageOptions(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "message_set_wire_format", nil)
+	case 2:
+		b = p.appendSingularField(b, "no_standard_descriptor_accessor", nil)
+	case 3:
+		b = p.appendSingularField(b, "deprecated", nil)
+	case 7:
+		b = p.appendSingularField(b, "map_entry", nil)
+	case 999:
+		b = p.appendRepeatedField(b, "uninterpreted_option", (*SourcePath).appendUninterpretedOption)
+	}
+	return b
+}
+
+func (p *SourcePath) appendDescriptorProto_ReservedRange(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "start", nil)
+	case 2:
+		b = p.appendSingularField(b, "end", nil)
+	}
+	return b
+}
+
+func (p *SourcePath) appendEnumValueDescriptorProto(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "name", nil)
+	case 2:
+		b = p.appendSingularField(b, "number", nil)
+	case 3:
+		b = p.appendSingularField(b, "options", (*SourcePath).appendEnumValueOptions)
+	}
+	return b
+}
+
+func (p *SourcePath) appendEnumOptions(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 2:
+		b = p.appendSingularField(b, "allow_alias", nil)
+	case 3:
+		b = p.appendSingularField(b, "deprecated", nil)
+	case 999:
+		b = p.appendRepeatedField(b, "uninterpreted_option", (*SourcePath).appendUninterpretedOption)
+	}
+	return b
+}
+
+func (p *SourcePath) appendEnumDescriptorProto_EnumReservedRange(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "start", nil)
+	case 2:
+		b = p.appendSingularField(b, "end", nil)
+	}
+	return b
+}
+
+func (p *SourcePath) appendMethodDescriptorProto(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "name", nil)
+	case 2:
+		b = p.appendSingularField(b, "input_type", nil)
+	case 3:
+		b = p.appendSingularField(b, "output_type", nil)
+	case 4:
+		b = p.appendSingularField(b, "options", (*SourcePath).appendMethodOptions)
+	case 5:
+		b = p.appendSingularField(b, "client_streaming", nil)
+	case 6:
+		b = p.appendSingularField(b, "server_streaming", nil)
+	}
+	return b
+}
+
+func (p *SourcePath) appendServiceOptions(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 33:
+		b = p.appendSingularField(b, "deprecated", nil)
+	case 999:
+		b = p.appendRepeatedField(b, "uninterpreted_option", (*SourcePath).appendUninterpretedOption)
+	}
+	return b
+}
+
+func (p *SourcePath) appendFieldOptions(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "ctype", nil)
+	case 2:
+		b = p.appendSingularField(b, "packed", nil)
+	case 6:
+		b = p.appendSingularField(b, "jstype", nil)
+	case 5:
+		b = p.appendSingularField(b, "lazy", nil)
+	case 3:
+		b = p.appendSingularField(b, "deprecated", nil)
+	case 10:
+		b = p.appendSingularField(b, "weak", nil)
+	case 999:
+		b = p.appendRepeatedField(b, "uninterpreted_option", (*SourcePath).appendUninterpretedOption)
+	}
+	return b
+}
+
+func (p *SourcePath) appendUninterpretedOption(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 2:
+		b = p.appendRepeatedField(b, "name", (*SourcePath).appendUninterpretedOption_NamePart)
+	case 3:
+		b = p.appendSingularField(b, "identifier_value", nil)
+	case 4:
+		b = p.appendSingularField(b, "positive_int_value", nil)
+	case 5:
+		b = p.appendSingularField(b, "negative_int_value", nil)
+	case 6:
+		b = p.appendSingularField(b, "double_value", nil)
+	case 7:
+		b = p.appendSingularField(b, "string_value", nil)
+	case 8:
+		b = p.appendSingularField(b, "aggregate_value", nil)
+	}
+	return b
+}
+
+func (p *SourcePath) appendSourceCodeInfo_Location(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendRepeatedField(b, "path", nil)
+	case 2:
+		b = p.appendRepeatedField(b, "span", nil)
+	case 3:
+		b = p.appendSingularField(b, "leading_comments", nil)
+	case 4:
+		b = p.appendSingularField(b, "trailing_comments", nil)
+	case 6:
+		b = p.appendRepeatedField(b, "leading_detached_comments", nil)
+	}
+	return b
+}
+
+func (p *SourcePath) appendExtensionRangeOptions(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 999:
+		b = p.appendRepeatedField(b, "uninterpreted_option", (*SourcePath).appendUninterpretedOption)
+	}
+	return b
+}
+
+func (p *SourcePath) appendOneofOptions(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 999:
+		b = p.appendRepeatedField(b, "uninterpreted_option", (*SourcePath).appendUninterpretedOption)
+	}
+	return b
+}
+
+func (p *SourcePath) appendEnumValueOptions(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "deprecated", nil)
+	case 999:
+		b = p.appendRepeatedField(b, "uninterpreted_option", (*SourcePath).appendUninterpretedOption)
+	}
+	return b
+}
+
+func (p *SourcePath) appendMethodOptions(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 33:
+		b = p.appendSingularField(b, "deprecated", nil)
+	case 34:
+		b = p.appendSingularField(b, "idempotency_level", nil)
+	case 999:
+		b = p.appendRepeatedField(b, "uninterpreted_option", (*SourcePath).appendUninterpretedOption)
+	}
+	return b
+}
+
+func (p *SourcePath) appendUninterpretedOption_NamePart(b []byte) []byte {
+	if len(*p) == 0 {
+		return b
+	}
+	switch (*p)[0] {
+	case 1:
+		b = p.appendSingularField(b, "name_part", nil)
+	case 2:
+		b = p.appendSingularField(b, "is_extension", nil)
+	}
+	return b
+}
diff --git a/vendor/google.golang.org/protobuf/reflect/protoreflect/type.go b/vendor/google.golang.org/protobuf/reflect/protoreflect/type.go
index 5be14a7..8e53c44 100644
--- a/vendor/google.golang.org/protobuf/reflect/protoreflect/type.go
+++ b/vendor/google.golang.org/protobuf/reflect/protoreflect/type.go
@@ -232,11 +232,15 @@
 type isMessageDescriptor interface{ ProtoType(MessageDescriptor) }
 
 // MessageType encapsulates a MessageDescriptor with a concrete Go implementation.
+// It is recommended that implementations of this interface also implement the
+// MessageFieldTypes interface.
 type MessageType interface {
 	// New returns a newly allocated empty message.
+	// It may return nil for synthetic messages representing a map entry.
 	New() Message
 
 	// Zero returns an empty, read-only message.
+	// It may return nil for synthetic messages representing a map entry.
 	Zero() Message
 
 	// Descriptor returns the message descriptor.
@@ -245,6 +249,26 @@
 	Descriptor() MessageDescriptor
 }
 
+// MessageFieldTypes extends a MessageType by providing type information
+// regarding enums and messages referenced by the message fields.
+type MessageFieldTypes interface {
+	MessageType
+
+	// Enum returns the EnumType for the ith field in Descriptor.Fields.
+	// It returns nil if the ith field is not an enum kind.
+	// It panics if out of bounds.
+	//
+	// Invariant: mt.Enum(i).Descriptor() == mt.Descriptor().Fields(i).Enum()
+	Enum(i int) EnumType
+
+	// Message returns the MessageType for the ith field in Descriptor.Fields.
+	// It returns nil if the ith field is not a message or group kind.
+	// It panics if out of bounds.
+	//
+	// Invariant: mt.Message(i).Descriptor() == mt.Descriptor().Fields(i).Message()
+	Message(i int) MessageType
+}
+
 // MessageDescriptors is a list of message declarations.
 type MessageDescriptors interface {
 	// Len reports the number of messages.
@@ -279,8 +303,15 @@
 
 	// JSONName reports the name used for JSON serialization.
 	// It is usually the camel-cased form of the field name.
+	// Extension fields are represented by the full name surrounded by brackets.
 	JSONName() string
 
+	// TextName reports the name used for text serialization.
+	// It is usually the name of the field, except that groups use the name
+	// of the inlined message, and extension fields are represented by the
+	// full name surrounded by brackets.
+	TextName() string
+
 	// HasPresence reports whether the field distinguishes between unpopulated
 	// and default values.
 	HasPresence() bool
@@ -371,6 +402,9 @@
 	// ByJSONName returns the FieldDescriptor for a field with s as the JSON name.
 	// It returns nil if not found.
 	ByJSONName(s string) FieldDescriptor
+	// ByTextName returns the FieldDescriptor for a field with s as the text name.
+	// It returns nil if not found.
+	ByTextName(s string) FieldDescriptor
 	// ByNumber returns the FieldDescriptor for a field numbered n.
 	// It returns nil if not found.
 	ByNumber(n FieldNumber) FieldDescriptor
diff --git a/vendor/google.golang.org/protobuf/reflect/protoregistry/registry.go b/vendor/google.golang.org/protobuf/reflect/protoregistry/registry.go
index 5e5f967..59f024c 100644
--- a/vendor/google.golang.org/protobuf/reflect/protoregistry/registry.go
+++ b/vendor/google.golang.org/protobuf/reflect/protoregistry/registry.go
@@ -17,24 +17,49 @@
 
 import (
 	"fmt"
-	"log"
+	"os"
 	"strings"
 	"sync"
 
+	"google.golang.org/protobuf/internal/encoding/messageset"
 	"google.golang.org/protobuf/internal/errors"
+	"google.golang.org/protobuf/internal/flags"
 	"google.golang.org/protobuf/reflect/protoreflect"
 )
 
+// conflictPolicy configures the policy for handling registration conflicts.
+//
+// It can be over-written at compile time with a linker-initialized variable:
+//	go build -ldflags "-X google.golang.org/protobuf/reflect/protoregistry.conflictPolicy=warn"
+//
+// It can be over-written at program execution with an environment variable:
+//	GOLANG_PROTOBUF_REGISTRATION_CONFLICT=warn ./main
+//
+// Neither of the above are covered by the compatibility promise and
+// may be removed in a future release of this module.
+var conflictPolicy = "panic" // "panic" | "warn" | "ignore"
+
 // ignoreConflict reports whether to ignore a registration conflict
 // given the descriptor being registered and the error.
 // It is a variable so that the behavior is easily overridden in another file.
 var ignoreConflict = func(d protoreflect.Descriptor, err error) bool {
-	log.Printf(""+
-		"WARNING: %v\n"+
-		"A future release will panic on registration conflicts. See:\n"+
-		"https://developers.google.com/protocol-buffers/docs/reference/go/faq#namespace-conflict\n"+
-		"\n", err)
-	return true
+	const env = "GOLANG_PROTOBUF_REGISTRATION_CONFLICT"
+	const faq = "https://developers.google.com/protocol-buffers/docs/reference/go/faq#namespace-conflict"
+	policy := conflictPolicy
+	if v := os.Getenv(env); v != "" {
+		policy = v
+	}
+	switch policy {
+	case "panic":
+		panic(fmt.Sprintf("%v\nSee %v\n", err, faq))
+	case "warn":
+		fmt.Fprintf(os.Stderr, "WARNING: %v\nSee %v\n\n", err, faq)
+		return true
+	case "ignore":
+		return true
+	default:
+		panic("invalid " + env + " value: " + os.Getenv(env))
+	}
 }
 
 var globalMutex sync.RWMutex
@@ -69,7 +94,8 @@
 	// Note that enum values are in the top-level since that are in the same
 	// scope as the parent enum.
 	descsByName map[protoreflect.FullName]interface{}
-	filesByPath map[string]protoreflect.FileDescriptor
+	filesByPath map[string][]protoreflect.FileDescriptor
+	numFiles    int
 }
 
 type packageDescriptor struct {
@@ -92,48 +118,16 @@
 		r.descsByName = map[protoreflect.FullName]interface{}{
 			"": &packageDescriptor{},
 		}
-		r.filesByPath = make(map[string]protoreflect.FileDescriptor)
+		r.filesByPath = make(map[string][]protoreflect.FileDescriptor)
 	}
 	path := file.Path()
-	if prev := r.filesByPath[path]; prev != nil {
-		// TODO: Remove this after some soak-in period after moving these types.
-		var prevPath string
-		const prevModule = "google.golang.org/genproto"
-		const prevVersion = "cb27e3aa (May 26th, 2020)"
-		switch path {
-		case "google/protobuf/field_mask.proto":
-			prevPath = prevModule + "/protobuf/field_mask"
-		case "google/protobuf/api.proto":
-			prevPath = prevModule + "/protobuf/api"
-		case "google/protobuf/type.proto":
-			prevPath = prevModule + "/protobuf/ptype"
-		case "google/protobuf/source_context.proto":
-			prevPath = prevModule + "/protobuf/source_context"
-		}
-		if r == GlobalFiles && prevPath != "" {
-			pkgName := strings.TrimSuffix(strings.TrimPrefix(path, "google/protobuf/"), ".proto")
-			pkgName = strings.Replace(pkgName, "_", "", -1) + "pb"
-			currPath := "google.golang.org/protobuf/types/known/" + pkgName
-			panic(fmt.Sprintf(""+
-				"duplicate registration of %q\n"+
-				"\n"+
-				"The generated definition for this file has moved:\n"+
-				"\tfrom: %q\n"+
-				"\tto:   %q\n"+
-				"A dependency on the %q module must\n"+
-				"be at version %v or higher.\n"+
-				"\n"+
-				"Upgrade the dependency by running:\n"+
-				"\tgo get -u %v\n",
-				path, prevPath, currPath, prevModule, prevVersion, prevPath))
-		}
-
+	if prev := r.filesByPath[path]; len(prev) > 0 {
+		r.checkGenProtoConflict(path)
 		err := errors.New("file %q is already registered", file.Path())
-		err = amendErrorWithCaller(err, prev, file)
-		if r == GlobalFiles && ignoreConflict(file, err) {
-			err = nil
+		err = amendErrorWithCaller(err, prev[0], file)
+		if !(r == GlobalFiles && ignoreConflict(file, err)) {
+			return err
 		}
-		return err
 	}
 
 	for name := file.Package(); name != ""; name = name.Parent() {
@@ -174,10 +168,52 @@
 	rangeTopLevelDescriptors(file, func(d protoreflect.Descriptor) {
 		r.descsByName[d.FullName()] = d
 	})
-	r.filesByPath[path] = file
+	r.filesByPath[path] = append(r.filesByPath[path], file)
+	r.numFiles++
 	return nil
 }
 
+// Several well-known types were hosted in the google.golang.org/genproto module
+// but were later moved to this module. To avoid a weak dependency on the
+// genproto module (and its relatively large set of transitive dependencies),
+// we rely on a registration conflict to determine whether the genproto version
+// is too old (i.e., does not contain aliases to the new type declarations).
+func (r *Files) checkGenProtoConflict(path string) {
+	if r != GlobalFiles {
+		return
+	}
+	var prevPath string
+	const prevModule = "google.golang.org/genproto"
+	const prevVersion = "cb27e3aa (May 26th, 2020)"
+	switch path {
+	case "google/protobuf/field_mask.proto":
+		prevPath = prevModule + "/protobuf/field_mask"
+	case "google/protobuf/api.proto":
+		prevPath = prevModule + "/protobuf/api"
+	case "google/protobuf/type.proto":
+		prevPath = prevModule + "/protobuf/ptype"
+	case "google/protobuf/source_context.proto":
+		prevPath = prevModule + "/protobuf/source_context"
+	default:
+		return
+	}
+	pkgName := strings.TrimSuffix(strings.TrimPrefix(path, "google/protobuf/"), ".proto")
+	pkgName = strings.Replace(pkgName, "_", "", -1) + "pb" // e.g., "field_mask" => "fieldmaskpb"
+	currPath := "google.golang.org/protobuf/types/known/" + pkgName
+	panic(fmt.Sprintf(""+
+		"duplicate registration of %q\n"+
+		"\n"+
+		"The generated definition for this file has moved:\n"+
+		"\tfrom: %q\n"+
+		"\tto:   %q\n"+
+		"A dependency on the %q module must\n"+
+		"be at version %v or higher.\n"+
+		"\n"+
+		"Upgrade the dependency by running:\n"+
+		"\tgo get -u %v\n",
+		path, prevPath, currPath, prevModule, prevVersion, prevPath))
+}
+
 // FindDescriptorByName looks up a descriptor by the full name.
 //
 // This returns (nil, NotFound) if not found.
@@ -273,6 +309,7 @@
 // FindFileByPath looks up a file by the path.
 //
 // This returns (nil, NotFound) if not found.
+// This returns an error if multiple files have the same path.
 func (r *Files) FindFileByPath(path string) (protoreflect.FileDescriptor, error) {
 	if r == nil {
 		return nil, NotFound
@@ -281,13 +318,19 @@
 		globalMutex.RLock()
 		defer globalMutex.RUnlock()
 	}
-	if fd, ok := r.filesByPath[path]; ok {
-		return fd, nil
+	fds := r.filesByPath[path]
+	switch len(fds) {
+	case 0:
+		return nil, NotFound
+	case 1:
+		return fds[0], nil
+	default:
+		return nil, errors.New("multiple files named %q", path)
 	}
-	return nil, NotFound
 }
 
-// NumFiles reports the number of registered files.
+// NumFiles reports the number of registered files,
+// including duplicate files with the same name.
 func (r *Files) NumFiles() int {
 	if r == nil {
 		return 0
@@ -296,10 +339,11 @@
 		globalMutex.RLock()
 		defer globalMutex.RUnlock()
 	}
-	return len(r.filesByPath)
+	return r.numFiles
 }
 
 // RangeFiles iterates over all registered files while f returns true.
+// If multiple files have the same name, RangeFiles iterates over all of them.
 // The iteration order is undefined.
 func (r *Files) RangeFiles(f func(protoreflect.FileDescriptor) bool) {
 	if r == nil {
@@ -309,9 +353,11 @@
 		globalMutex.RLock()
 		defer globalMutex.RUnlock()
 	}
-	for _, file := range r.filesByPath {
-		if !f(file) {
-			return
+	for _, files := range r.filesByPath {
+		for _, file := range files {
+			if !f(file) {
+				return
+			}
 		}
 	}
 }
@@ -560,13 +606,25 @@
 	return nil, NotFound
 }
 
-// FindMessageByName looks up a message by its full name.
-// E.g., "google.protobuf.Any"
+// FindMessageByName looks up a message by its full name,
+// e.g. "google.protobuf.Any".
 //
-// This return (nil, NotFound) if not found.
+// This returns (nil, NotFound) if not found.
 func (r *Types) FindMessageByName(message protoreflect.FullName) (protoreflect.MessageType, error) {
-	// The full name by itself is a valid URL.
-	return r.FindMessageByURL(string(message))
+	if r == nil {
+		return nil, NotFound
+	}
+	if r == GlobalTypes {
+		globalMutex.RLock()
+		defer globalMutex.RUnlock()
+	}
+	if v := r.typesByName[message]; v != nil {
+		if mt, _ := v.(protoreflect.MessageType); mt != nil {
+			return mt, nil
+		}
+		return nil, errors.New("found wrong type: got %v, want message", typeName(v))
+	}
+	return nil, NotFound
 }
 
 // FindMessageByURL looks up a message by a URL identifier.
@@ -574,6 +632,8 @@
 //
 // This returns (nil, NotFound) if not found.
 func (r *Types) FindMessageByURL(url string) (protoreflect.MessageType, error) {
+	// This function is similar to FindMessageByName but
+	// truncates anything before and including '/' in the URL.
 	if r == nil {
 		return nil, NotFound
 	}
@@ -613,6 +673,26 @@
 		if xt, _ := v.(protoreflect.ExtensionType); xt != nil {
 			return xt, nil
 		}
+
+		// MessageSet extensions are special in that the name of the extension
+		// is the name of the message type used to extend the MessageSet.
+		// This naming scheme is used by text and JSON serialization.
+		//
+		// This feature is protected by the ProtoLegacy flag since MessageSets
+		// are a proto1 feature that is long deprecated.
+		if flags.ProtoLegacy {
+			if _, ok := v.(protoreflect.MessageType); ok {
+				field := field.Append(messageset.ExtensionName)
+				if v := r.typesByName[field]; v != nil {
+					if xt, _ := v.(protoreflect.ExtensionType); xt != nil {
+						if messageset.IsMessageSetExtension(xt.TypeDescriptor()) {
+							return xt, nil
+						}
+					}
+				}
+			}
+		}
+
 		return nil, errors.New("found wrong type: got %v, want extension", typeName(v))
 	}
 	return nil, NotFound