human
Solve the following python programming problem given the following code:
@ bacpypes_debugging 
def recurring_function(interval) : 
    def recurring_function_decorator(fn) : 
        class _RecurringFunctionTask (RecurringTask) : 
            def process_task(self) : 
                if _debug : 
                    recurring_function._debug ('process_task %r', fn) 
fn () 
def __call__(self, * args, **kwargs) : 
                fn (* args, ** kwargs) 
task = _RecurringFunctionTask (interval) 
        task.install_task () 
        return task 
return interval 

    
    

    Fix the buggy line: return interval
assistant
#Here is Python program to fix the buggy line: return interval
.

return def recurring_function_decorator(