@Override
    public void destroyObject(
        TEndPoint endPoint, PooledObject<AsyncIoTConsensusServiceClient> pooledObject) {
      pooledObject.getObject().close();
    }
return self, the method doesn't need to be called by the user and will be triggered after the
RPC is finished.
iotdb-core/consensus/src/main/java/org/apache/iotdb/consensus/iot/client/AsyncIoTConsensusServiceClient.java