public Builder setEnumType(
          int index, com.google.protobuf.DescriptorProtos.EnumDescriptorProto.Builder builderForValue) {
        if (enumTypeBuilder_ == null) {
          ensureEnumTypeIsMutable();
          enumType_.set(index, builderForValue.build());
          onChanged();
        } else {
          enumTypeBuilder_.setMessage(index, builderForValue.build());
        }
        return this;
      }