def remove_text_structure(self, text_structure): # TODO: delete also TextElements one by one
        """
        Remove any citable text structure to the work.
        """
        idx = self.hucit_has_structure.index(text_structure)
        ts = self.hucit_has_structure.pop(idx)
        ts.remove()
        self.update()
        return
Remove any citable text structure to the work.