code: def _add_creator(self):
          
          creator = self._creator
          creator.__doc__ = (
              'Return a "loose", newly created ``<%s>`` element having no attri'
              'butes, text, or children.' % self._nsptagname
          )
          self._add_to_class(self._new_method_name, creator)
docs: Add a ``_new_{prop_name}()`` method to the element class that creates
          a new, empty element of the correct type, having no attributes.