code: def training_docs(self):
      if self._training_docs is None:
          self._training_docs = list(
              map(self._process_doc, self.dataset["train"])
          )
      return self._training_docs
  
file_path: lm-evaluation-harness/lm_eval/tasks/quac.py
imports: import inspect
  import lm_eval.datasets.quac.quac
  from lm_eval.base import Task
label_desc: Use image node_id 4 for calling the QuAC obj's underlying member method code with example usage: obj.training_docs() and returns: self