bin/x86-macos/google/protobuf/field_mask.proto in grpc-tools-1.7.3 vs bin/x86-macos/google/protobuf/field_mask.proto in grpc-tools-1.8.0

@@ -238,9 +238,15 @@
 //       paths: "sub_message"
 //     }
 //
 // Note that oneof type names ("test_oneof" in this case) cannot be used in
 // paths.
+//
+// ## Field Mask Verification
+//
+// The implementation of the all the API methods, which have any FieldMask type
+// field in the request, should verify the included field paths, and return
+// `INVALID_ARGUMENT` error if any path is duplicated or unmappable.
 message FieldMask {
   // The set of field mask paths.
   repeated string paths = 1;
 }