code: def test_find_all_combinations(
      self,
      min_element_count: int,
      max_element_count: int,
      expected: list[list[int]],
  ):
      combinations = utils.find_all_combinations(
          [1, 2, 3, 4], min_element_count, max_element_count
      )
      self.assertEqual(combinations, expected)
  
imports: from collections.abc import Callable, Sequence
  import copy
  from typing import Any, Optional, TypeVar, Union
  from absl.testing import absltest
  from absl.testing import parameterized
  from lit_nlp.api import types
  from lit_nlp.lib import utils
  import numpy
label_desc: Use image node_id 10 for calling the UtilsTest obj's underlying member method code with example usage: obj.test_find_all_combinations(min_element_count, max_element_count, expected) without return types