def get_pack_uid(self):
        """
        Return an UID of a pack this resource belongs to.

        :rtype ``str``
        """
        parts = [ResourceType.PACK, self.pack]
        uid = UIDFieldMixin.UID_SEPARATOR.join(parts)
        return uid

        Return an UID of a pack this resource belongs to.

        :rtype ``str``
        
st2common/st2common/models/db/stormbase.py