@status_logger
    def write_constraints(self, table):
        constraint_sql = super(PostgresDbWriter, self).write_constraints(table)
        for sql in constraint_sql:
            self.execute(sql)
XXX use TypedInterfaceConfigurable as a fallback if this interface doesn't
dataset/ETHPy150Open philipsoutham/py-mysql2pgsql/mysql2pgsql/lib/postgres_db_writer.py/PostgresDbWriter.write_constraints--crossover with--dataset/ETHPy150Open twisted/nevow/formless/iformless.py/_MetaConfigurable.__call__