public Builder setIdentity(
          com.alibaba.otter.node.etl.model.protobuf.BatchProto.Identity.Builder builderForValue) {
        if (identityBuilder_ == null) {
          identity_ = builderForValue.build();
          onChanged();
        } else {
          identityBuilder_.setMessage(builderForValue.build());
        }
        bitField0_ |= 0x00000001;
        return this;
      }
<code>optional .com.alibaba.otter.node.etl.model.protobuf.Identity identity = 1;</code>
node/etl/src/main/java/com/alibaba/otter/node/etl/model/protobuf/BatchProto.java