Shortcut for commands that reset values of the field.
        All will be deindexed and reindexed.

def _reset(self, command, *args, **kwargs):
        """
        Shortcut for commands that reset values of the field.
        All will be deindexed and reindexed.
        """
        if self.indexable:
            self.deindex()
        result = self._traverse_command(command, *args, **kwargs)
        if self.indexable:
            self.index()
        return result