code: def doc_to_text(self, doc):
      return "Problem: " + doc["problem"] + "\nAnswer:"
  
imports: import inspect
  import lm_eval.datasets.hendrycks_math.hendrycks_math
  from lm_eval.metrics import mean
  from lm_eval.base import Task, rf
label_desc: Use image node_id 8 for calling the Math obj's underlying member method code with example usage: obj.doc_to_text(doc) and returns: unknown