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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _set_sequence(cls, val):
 """Internal function to reset sequence to specific value. Note: this function is for PostgreSQL compatibility. :param val: The value to be set. """

        if db.engine.dialect.name == 'postgresql':  # pragma: no cover
            db.session.execute(
                "SELECT setval(pg_get_serial_sequence("
                "'{0}', 'recid'), :newval)".format(
                    cls.__tablename__), dict(newval=val))