code: def _docstring_key(self, line):
          
          decormatch = self.docparser.RE_DECOR.match(line)
          if decormatch is not None:
              key = "{}.{}".format(self.docelement.name, decormatch.group("name"))
          else:
              key = self.element.name
  
          return key
docs: Returns the key to use for the docblock immediately preceding
          the specified line.