def tags(self):
		'''Return a list of all tags that have this semantic tag, sorted by name.
		:rtype: list of ckan.model.tag.Tag objects
		'''
		q = meta.Session.query(_tag.Tag)
		q = q.join(TagSemanticTag)
		q = q.filter_by(tag_id=self.id)
		q = q.order_by(_tag.Tag.name)
		tags = q.all()
		return tags