public TProcessor wrapProcessor(TProcessor processor) {
      return new TUGIAssumingProcessor(processor, secretManager, true);
    }
Wrap a TProcessor in such a way that, before processing any RPC, it
assumes the UserGroupInformation of the user authenticated by
the SASL transport.
standalone-metastore/metastore-common/src/main/java/org/apache/hadoop/hive/metastore/security/HadoopThriftAuthBridge.java