code: def test_reindex(idx):
      result, indexer = idx.reindex(list(idx[:4]))
      assert isinstance(result, MultiIndex)
      assert result.names == ["first", "second"]
      assert [level.name for level in result.levels] == [
          "first",
          "second",
      ]
  
      result, indexer = idx.reindex(list(idx))
      assert isinstance(result, MultiIndex)
      assert indexer is None
      assert result.names == ["first", "second"]
      assert [level.name for level in result.levels] == [
          "first",
          "second",
      ]
  
file_path: pandas/pandas/tests/indexes/multi/test_reindex.py
imports: import numpy
  import pytest
  import pandas
  from pandas import Index, MultiIndex
  import pandas._testing
label_desc: Use image node_id 1 for calling a global function with example usage: test_reindex(idx) without return types