code: def validation_docs(self):
      return map(self._process_doc, self.dataset["validation"])
  
file_path: lm-evaluation-harness/lm_eval/tasks/wikitext.py
imports: import re
  from lm_eval.base import PerplexityTask
label_desc: Use image node_id 5 for calling the WikiText obj's underlying member method code with example usage: obj.validation_docs() and returns: map