public int getSerializedSize() {
      int size = memoizedSerializedSize;
      if (size != -1) return size;

      size = 0;
      if (((bitField0_ & 0x00000001) == 0x00000001)) {
        size += com.google.protobuf.CodedOutputStream
          .computeInt32Size(1, index_);
      }
      if (((bitField0_ & 0x00000002) == 0x00000002)) {
        size += com.google.protobuf.CodedOutputStream
          .computeBytesSize(2, getNameBytes());
      }
      if (((bitField0_ & 0x00000004) == 0x00000004)) {
        size += com.google.protobuf.CodedOutputStream
          .computeBytesSize(3, getValueBytes());
      }
      if (((bitField0_ & 0x00000008) == 0x00000008)) {
        size += com.google.protobuf.CodedOutputStream
          .computeBoolSize(4, isPrimaryKey_);
      }
      if (((bitField0_ & 0x00000010) == 0x00000010)) {
        size += com.google.protobuf.CodedOutputStream
          .computeBoolSize(5, isNull_);
      }
      if (((bitField0_ & 0x00000020) == 0x00000020)) {
        size += com.google.protobuf.CodedOutputStream
          .computeInt32Size(6, type_);
      }
      if (((bitField0_ & 0x00000040) == 0x00000040)) {
        size += com.google.protobuf.CodedOutputStream
          .computeBoolSize(7, isUpdate_);
      }
      size += getUnknownFields().getSerializedSize();
      memoizedSerializedSize = size;
      return size;
    }
Protobuf type {@code com.alibaba.otter.node.etl.model.protobuf.Column}
node/etl/src/main/java/com/alibaba/otter/node/etl/model/protobuf/BatchProto.java