code: def transform(self, X, y=None):
      super(VoidFunctionTransformer, self).transform(X)
      return X
  
file_path: neupy/examples/mlp/imdb_review_classification/src/preprocessing.py
imports: from nltk.corpus import stopwords
  from nltk.tokenize import RegexpTokenizer
  from sklearn.base import TransformerMixin
  from sklearn.preprocessing import FunctionTransformer
label_desc: Use image node_id 1 for calling the VoidFunctionTransformer obj's underlying member method code with example usage: obj.transform(X, y) and returns: X