code: def test_equals_multiindex(self):
      # dont raise NotImplementedError when calling is_dtype_compat
  
      mi = MultiIndex.from_arrays([["A", "B", "C", "D"], range(4)])
      ci = mi.to_flat_index().astype("category")
  
      assert not ci.equals(mi)
  
file_path: pandas/pandas/tests/indexes/categorical/test_equals.py
imports: import numpy
  import pytest
  from pandas import Categorical, CategoricalIndex, Index, MultiIndex
label_desc: Use image node_id 4 for calling the TestEquals obj's underlying member method code with example usage: obj.test_equals_multiindex() without return types