code: def new_fulltext(self, version):
          
          query_string = "/{t}/{u}/fulltext".format(
              t=self.library_type, u=self.library_id
          )
          headers = {"since": str(version)}
          headers.update(self.default_headers())
          req = requests.get(self.endpoint + query_string, headers=headers)
          try:
              req.raise_for_status()
          except requests.exceptions.HTTPError:
              error_handler(req)
          return req.json()
docs: Retrieve list of full-text content items and versions which are newer
          than <version>