[BUG] how to distinguish the metric with passed record

[qshuai]

prometheus metric example:

sentinel_go_handled_total{app="unknown_go_service",block_type="",host="xxx",pid="1",resource="GET:/api/test/error",result="pass"} 1213
sentinel_go_handled_total{app="unknown_go_service",block_type="",host="xxx",pid="1",resource="GET:/test/panic",result="pass"} 193

the first record is circuitbreak metric. the other is flow control metric.
But there is not a label to distinguish which the entry belongs to.