code: def assignrepr(self, prefix: str) -> str:
          
          with objecttools.repr_.preserve_strings(True):
              with hydpy.pub.options.ellipsis(2, optional=True):
                  with objecttools.assignrepr_tuple.always_bracketed(False):
                      classname = objecttools.classname(self)
                      blanks = ' ' * (len(prefix+classname) + 1)
                      nodestr = objecttools.assignrepr_tuple(
                          self.nodes.names, blanks+'nodes=', 70)
                      elementstr = objecttools.assignrepr_tuple(
                          self.elements.names, blanks + 'elements=', 70)
                      return (f'{prefix}{classname}("{self.name}",\n'
                              f'{nodestr},\n'
                              f'{elementstr})')
docs: Return a |repr| string with a prefixed assignment.