public Builder addAllField(
          java.lang.Iterable<? extends com.google.protobuf.DescriptorProtos.FieldDescriptorProto> values) {
        if (fieldBuilder_ == null) {
          ensureFieldIsMutable();
          super.addAll(values, field_);
          onChanged();
        } else {
          fieldBuilder_.addAllMessages(values);
        }
        return this;
      }