code: def _getter(self):
          
          def get_child_element(obj):
              return obj.find(qn(self._nsptagname))
          get_child_element.__doc__ = (
              '``<%s>`` child element or |None| if not present.'
              % self._nsptagname
          )
          return get_child_element
docs: Return a function object suitable for the "get" side of the property
          descriptor. This default getter returns the child element with
          matching tag name or |None| if not present.