def get_pack_ref(self):
        """
        Retrieve pack name for the action which is being currently executed.

        :rtype: ``str``
        """
        if self.action:
            return self.action.pack

        return pack_constants.DEFAULT_PACK_NAME

        Retrieve pack name for the action which is being currently executed.

        :rtype: ``str``
        
st2common/st2common/runners/base.py