code: def test_meter():
      class DummyMeter(AbstractMeter):
          pass
  
      DummyMeter.__abstractmethods__ = set()
      m = DummyMeter("test_meter")
      assert m.name == "test_meter"
      assert m.description == ""
      assert m.tag_keys == ()
      assert m.type == "Meter"
      assert m.record(1) is None
  
file_path: mars/mars/metrics/backends/tests/test_metric.py
imports: import pytest
  from ..metric import AbstractMetric, AbstractCounter, AbstractGauge, AbstractMeter, AbstractHistogram
label_desc: Use image node_id 5 for calling a global function with example usage: test_meter() without return types