code: def test_ZeroCount_fit():
      """Assert that fit() in ZeroCount does nothing."""
      op = ZeroCount()
      ret_op = op.fit(X)
  
      assert ret_op == op
  
imports: import numpy
  from tpot.builtins import ZeroCount
label_desc: Use image node_id 2 for calling a global function with example usage: test_ZeroCount_fit() without return types