code: def _resolve_match_data(self, ref, event_data):
          
          if self.caller is None:
              pass
          elif ref is not self.caller:
              return False
          try:
              dat = event_data if IS_PYTHON3 else event_data.decode("utf-8")
              if self.match_data.startswith("regex:"):
                  splt = self.match_data.split(":", 1)
                  pttrn = re.compile(splt[1])
                  match = re.search(pttrn, dat)
                  return match if match is not None else False
              return event_data if self.match_data in dat else False
          except UnicodeDecodeError:
              dat = repr(event_data)
              return self._resolve_match_data(ref, dat)
docs: If match_data is prefixed with regex: compile it to a regular expression pattern.
          Match event data with match_data as either regex or string.
  
          :param ref: Reference to object that generated this event.
          :param event_data: Data from event, as string.
          :return: return re.MatchObject if match found, False if ref is not caller
          set for this Matcher or if no match was found.