def METHOD_NAME(self) -> Optional[str]:
    if self._state is None or self._state == "*":
        return self._state
    if self._group_name is None and self._group:
        group = self._group.__full_group_name__
    elif self._group_name:
        group = self._group_name
    else:
        group = "@"
    return f"{group}:{self._state}"