async def touch(self, task_id, increment):
args = (task_id, increment)<EOL>res = await self.conn.call(self.__funcs['<STR_LIT>'], args)<EOL>return self._create_task(res.body)<EOL>
Update task ttl and/or ttr by increment value

:param task_id: Task id
:param increment: Seconds to add to ttr
:return: Task instance