docstr: By default, don't do anything
docstr_tok: ["By","default",",","do","n't","do","anything"]
code: def preprocess_sentences(self, sentences):
      """
      By default, don't do anything
      """
      return sentences
  
file_path: stanza/stanza/models/classifiers/base_classifier.py
imports: from abc import ABC, abstractmethod
  import logging
  import torch
  import torch.nn
  from stanza.models.common.utils import split_into_batches, sort_with_indices, unsort
label_desc: Use image node_id 2 for calling the BaseClassifier obj's underlying member method code with example usage: obj.preprocess_sentences(sentences) and returns: sentences