code: @Override
    public OperationHandle getFunctions(SessionHandle sessionHandle,
        String catalogName, String schemaName, String functionName)
            throws HiveSQLException {
      return cliService.getFunctions(sessionHandle, catalogName, schemaName, functionName);
    }
docs: /* (non-Javadoc)
  @see org.apache.hive.service.cli.CLIServiceClient#getFunctions(org.apache.hive.service.cli.SessionHandle, java.lang.String)