def METHOD_NAME(self, *items):
    """
    Add items to be sorted.
    @param items: One or more items to be added.
    @type items: I{item}
    @return: self
    @rtype: L{DepList}
    """
    for item in items:
        self.unsorted.append(item)
        key = item[0]
        self.index[key] = item
    return self