code: def test_hashable(self):
      id1 = ids.uuid()
      id2 = ids.uuid()
      assert id1 == id1
      assert id1 != id2
      assert hash(id1) != hash(id2)
      id1c = copy.copy(id1)
      id1dc = copy.deepcopy(id1)
      assert hash(id1) != hash(id1c)
      assert hash(id1) != hash(id1dc)
  
label_desc: Use image node_id 1 for calling the TestIds obj's underlying member method code with example usage: obj.test_hashable() without return types