public com.alibaba.otter.node.etl.model.protobuf.BatchProto.Identity.Builder getIdentityBuilder() {
        bitField0_ |= 0x00000001;
        onChanged();
        return getIdentityFieldBuilder().getBuilder();
      }
<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