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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 task(self, _fn=None, queue=None, hard_timeout=None, unique=None, lock=None, lock_key=None, retry=None, retry_on=None, retry_method=None, schedule=None, batch=False, max_queue_size=None):
 """ Function decorator that defines the behavior of the function when it is used as a task. To use the default behavior, tasks don't need to be decorated. See README.rst for an explanation of the options. """


        def _delay(func):
            def _delay_inner(*args, **kwargs):
                return self.delay(func, args=args, kwargs=kwargs)
            return _delay_inner

        # Periodic tasks are unique.
        if schedule is not None:
            unique = True

        def _wrap(func):
            if hard_timeout is not None:
                func._task_hard_timeout = hard_timeout
            if queue is not None:
                func._task_queue = queue
            if unique is not None:
                func._task_unique = unique
            if lock is not None:
                func._task_lock = lock
            if lock_key is not None:
                func._task_lock_key = lock_key
            if retry is not None:
                func._task_retry = retry
            if retry_on is not None:
                func._task_retry_on = retry_on
            if retry_method is not None:
                func._task_retry_method = retry_method
            if batch is not None:
                func._task_batch = batch
            if schedule is not None:
                func._task_schedule = schedule
            if max_queue_size is not None:
                func._task_max_queue_size = max_queue_size

            func.delay = _delay(func)

            if schedule is not None:
                serialized_func = serialize_func_name(func)
                assert serialized_func not in self.periodic_task_funcs, \
                    "attempted duplicate registration of periodic task"
                self.periodic_task_funcs[serialized_func] = func

            return func

        return _wrap if _fn is None else _wrap(_fn)