code: def write_sents(self, sents, *args, **kwargs):
      first = True
  
      for sent in sents:
          if not first:
              self.write(" ", *args, **kwargs)
          else:
              first = False
  
          self.write(self.chunked_sent_string(sent), *args, **kwargs)
  
imports: from nltk.tag.util import tuple2str
  from nltk_trainer.writer import CorpusWriter
label_desc: Use image node_id 2 for calling the ChunkedCorpusWriter obj's underlying member method code with example usage: obj.write_sents(sents) without return types