code: def test_meter_floor(kwargs, delta):
      it = iter([124, 123])
      with metrics.meter(lambda: next(it), **kwargs) as m:
          pass
      assert m.start == 124
      assert m.stop == 123
      assert m.delta == delta
  
imports: from __future__ import annotations
  import math
  import pickle
  import threading
  import time
  import pytest
  from distributed import metrics
  from distributed.compatibility import WINDOWS
  from distributed.utils import offload
  from distributed.utils_test import gen_test
label_desc: Use image node_id 5 for calling a global function with example usage: test_meter_floor(kwargs, delta) without return types