diff --git a/vendor/google.golang.org/genproto/googleapis/api/annotations/field_behavior.pb.go b/vendor/google.golang.org/genproto/googleapis/api/annotations/field_behavior.pb.go
new file mode 100644
index 0000000..31f87dd
--- /dev/null
+++ b/vendor/google.golang.org/genproto/googleapis/api/annotations/field_behavior.pb.go
@@ -0,0 +1,122 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: google/api/field_behavior.proto
+
+package annotations
+
+import (
+	fmt "fmt"
+	math "math"
+
+	proto "github.com/golang/protobuf/proto"
+	descriptor "github.com/golang/protobuf/protoc-gen-go/descriptor"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+// An indicator of the behavior of a given field (for example, that a field
+// is required in requests, or given as output but ignored as input).
+// This **does not** change the behavior in protocol buffers itself; it only
+// denotes the behavior and may affect how API tooling handles the field.
+//
+// Note: This enum **may** receive new values in the future.
+type FieldBehavior int32
+
+const (
+	// Conventional default for enums. Do not use this.
+	FieldBehavior_FIELD_BEHAVIOR_UNSPECIFIED FieldBehavior = 0
+	// Specifically denotes a field as optional.
+	// While all fields in protocol buffers are optional, this may be specified
+	// for emphasis if appropriate.
+	FieldBehavior_OPTIONAL FieldBehavior = 1
+	// Denotes a field as required.
+	// This indicates that the field **must** be provided as part of the request,
+	// and failure to do so will cause an error (usually `INVALID_ARGUMENT`).
+	FieldBehavior_REQUIRED FieldBehavior = 2
+	// Denotes a field as output only.
+	// This indicates that the field is provided in responses, but including the
+	// field in a request does nothing (the server *must* ignore it and
+	// *must not* throw an error as a result of the field's presence).
+	FieldBehavior_OUTPUT_ONLY FieldBehavior = 3
+	// Denotes a field as input only.
+	// This indicates that the field is provided in requests, and the
+	// corresponding field is not included in output.
+	FieldBehavior_INPUT_ONLY FieldBehavior = 4
+	// Denotes a field as immutable.
+	// This indicates that the field may be set once in a request to create a
+	// resource, but may not be changed thereafter.
+	FieldBehavior_IMMUTABLE FieldBehavior = 5
+)
+
+var FieldBehavior_name = map[int32]string{
+	0: "FIELD_BEHAVIOR_UNSPECIFIED",
+	1: "OPTIONAL",
+	2: "REQUIRED",
+	3: "OUTPUT_ONLY",
+	4: "INPUT_ONLY",
+	5: "IMMUTABLE",
+}
+
+var FieldBehavior_value = map[string]int32{
+	"FIELD_BEHAVIOR_UNSPECIFIED": 0,
+	"OPTIONAL":                   1,
+	"REQUIRED":                   2,
+	"OUTPUT_ONLY":                3,
+	"INPUT_ONLY":                 4,
+	"IMMUTABLE":                  5,
+}
+
+func (x FieldBehavior) String() string {
+	return proto.EnumName(FieldBehavior_name, int32(x))
+}
+
+func (FieldBehavior) EnumDescriptor() ([]byte, []int) {
+	return fileDescriptor_4648f18fd5079967, []int{0}
+}
+
+var E_FieldBehavior = &proto.ExtensionDesc{
+	ExtendedType:  (*descriptor.FieldOptions)(nil),
+	ExtensionType: ([]FieldBehavior)(nil),
+	Field:         1052,
+	Name:          "google.api.field_behavior",
+	Tag:           "varint,1052,rep,name=field_behavior,enum=google.api.FieldBehavior",
+	Filename:      "google/api/field_behavior.proto",
+}
+
+func init() {
+	proto.RegisterEnum("google.api.FieldBehavior", FieldBehavior_name, FieldBehavior_value)
+	proto.RegisterExtension(E_FieldBehavior)
+}
+
+func init() { proto.RegisterFile("google/api/field_behavior.proto", fileDescriptor_4648f18fd5079967) }
+
+var fileDescriptor_4648f18fd5079967 = []byte{
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+}