code: def test_inverse_transform_raises_not_implemented_error(df_enc_big):
      enc = RareLabelEncoder().fit(df_enc_big)
      with pytest.raises(NotImplementedError):
          enc.inverse_transform(df_enc_big)
  
file_path: feature_engine/tests/test_encoding/test_rare_label_encoder.py
imports: import pandas
  import pytest
  from feature_engine.encoding import RareLabelEncoder
label_desc: Use image node_id 12 for calling a global function with example usage: test_inverse_transform_raises_not_implemented_error(df_enc_big) without return types