presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/thrift/ThriftHiveMetastoreClient.java/ThriftHiveMetastoreClient/grantPrivileges
class ThriftHiveMetastoreClient:    @Override
    public boolean grantPrivileges(PrivilegeBag privilegeBag)
            throws TException
    {
        return client.grant_privileges(privilegeBag);
    }