def METHOD_NAME(self, *args):
    """
    Toggle multiple items in/out with a single call. Each item will be ha.
    :parameters:
         args : iterable
            an iterable object containing all item keys to be toggled in/out
    :return:
        + **True** if all toggled items were toggled **into** the filtered items
        + **False** if at least one of the items was toggled **out from** the filtered items
    :raises:
        + KeyError, in case if ont of the item keys was not part of the toggled list and not part of the referenced db.
    """
    # in python 3, 'map' returns an iterator, so wrapping with 'list' call creates same effect for both python 2 and 3
    return all(list(map(self.toggle_item, args)))