public Builder addAllFile(
          java.lang.Iterable<? extends com.google.protobuf.DescriptorProtos.FileDescriptorProto> values) {
        if (fileBuilder_ == null) {
          ensureFileIsMutable();
          super.addAll(values, file_);
          onChanged();
        } else {
          fileBuilder_.addAllMessages(values);
        }
        return this;
      }