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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def delete_tag(self, tag_id):
 """ Deletes a Tag to current object :param tag_id: the id of the tag which should be deleted :type tag_id: int :rtype: None """

        from highton.models.tag import Tag

        self._delete_request(
            endpoint=self.ENDPOINT + '/' + str(self.id) + '/' + Tag.ENDPOINT + '/' + str(tag_id),
        )