diff --git a/demo_test/vendor/google.golang.org/protobuf/internal/fieldnum/field_mask_gen.go b/demo_test/vendor/google.golang.org/protobuf/internal/fieldnum/field_mask_gen.go
new file mode 100644
index 0000000..7e3bfa2
--- /dev/null
+++ b/demo_test/vendor/google.golang.org/protobuf/internal/fieldnum/field_mask_gen.go
@@ -0,0 +1,12 @@
+// 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 fieldnum
+
+// Field numbers for google.protobuf.FieldMask.
+const (
+	FieldMask_Paths = 1 // repeated string
+)