code: def test_ac() -> None:
      func = ac.NgAquacrop(4, 12.0)
      x = 50.0 * np.random.rand(func.dimension)
      value = func(x)
      value2 = func(x)
      x = 50.0 * np.random.rand(func.dimension)
      value3 = func(x)
      np.testing.assert_almost_equal(value, value2)
      assert value != value3
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_ac() without return types