def METHOD_NAME(self):
    first = {1: [3, 1, 0]}
    second = {1: [1, 2, 4]}
    third = {1: [1, 2, 5], 2: [1, 2, 3]}
    merged = examinee.merge_dicts(first, second, third, list_semantics='merge')
    self.assertEqual(
        merged,
        {
            1: [3, 1, 0, 2, 4, 5],
            2: [1, 2, 3],
        }
    )