code: def test_is_in():
      d = is_in([1, 2, 3])
      assert isinstance(d, IsIn)
      assert d.options == [1, 2, 3]
  
      o = d.to_json()
      assert isinstance(o, dict)
      assert o["type"] == "IsIn"
  
      d2 = IsIn.from_json(o)
      assert isinstance(d2, IsIn)
      assert d2.options == [1, 2, 3]
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_is_in() without return types