def METHOD_NAME(self, update: object) -> Optional[List[str]]:
    """Determines whether an update should be passed to this handler's :attr:`callback`.
    Args:
        update (:obj:`object`): The incoming update.
    Returns:
        List[:obj:`str`]: List containing the text command split on whitespace.
    """
    if isinstance(update, str) and update.startswith("/"):
        args = update[1:].split(" ")
        if args[0] == self.command:
            return args[1:]
    return None