public Builder setCmdType(com.taobao.metamorphosis.server.transaction.store.TransactionCommands.TxCommandType value) {
        if (value == null) {
          throw new NullPointerException();
        }
        bitField0_ |= 0x00000001;
        cmdType_ = value;
        onChanged();
        return this;
      }
<code>required .com.taobao.tddl.dbproxy.protocol.TxCommandType cmdType = 1;</code>
metamorphosis-server/src/main/java/com/taobao/metamorphosis/server/transaction/store/TransactionCommands.java