def METHOD_NAME(self, port_oid):
    tbl = swsscommon.Table(self.adb, "ASIC_STATE:SAI_OBJECT_TYPE_BRIDGE_PORT")
    for key in tbl.getKeys():
        status, data = tbl.get(key)
        assert status
        values = dict(data)
        if port_oid == values["SAI_BRIDGE_PORT_ATTR_PORT_ID"]:
            return key
    return None