code: def get_X(self):
  		'''
  		:return: term freq matrix or metadata freq matrix
  		'''
  		if self._use_non_text_features:
  			return self._term_doc_matrix._mX
  		else:
  			return self._term_doc_matrix._f get_X(self):
  		'''
  		:return: term freq matrix or metadata freq matrix
  		'''
  		if self._use_non_text_features:
  			return self._term_doc_matrix._mX
  		else:
  			return self._term_doc_matrix._X
docs: :return: term freq matrix or metadata freq matrix