code: def test_op_works(self) -> None:
      pipeline = DataPipeline.count(start=4).take(10).and_return()
  
      for _ in range(2):
          assert list(pipeline) == list(range(4, 14))
  
          pipeline.reset()
  
imports: import pytest
  from fairseq2.data import DataPipeline
label_desc: Use image node_id 1 for calling the TestCountOp obj's underlying member method code with example usage: obj.test_op_works() without return types