'Return a list of Items that should be added to the library.
If the tasks applies an album match the method only returns the
matched items.'

def imported_items(self):

    if (self.choice_flag in (action.ASIS, action.RETAG)):
        return list(self.items)
    elif (self.choice_flag == action.APPLY):
        return list(self.match.mapping.keys())
    else:
        assert False
