human
Solve the following python programming problem given the following code:
def _instrumented_test_render(self, * args, **data) : 
    '
    An instrumented Template render method, providing a signal
    that can be intercepted by the test system Client
    ' 
    with _MAKO_LOCK : 
        def mako_callable_(context, * args, **kwargs) : 
            template_rendered.send (sender = self, template = self, context = context) 
            return self.original_callable_ [(- 1)] (context, * args, ** kwargs) 
if hasattr (self, 'original_callable_') : 
            self.original_callable_.append (mako_callable_.callable_) 
else : 
            self.original_callable_ = [self.callable_] 
self.callable_ = mako_callable_ 
        try : 
            response = runtime._render (self, self.original_callable_ [(- 1)], args, data) 
finally : 
            self.callable_ = self.original_callable_.pop () 
return response 

    
    

    Fix the buggy line: self.original_callable_.append (mako_callable_.callable_)
assistant
#Here is Python code to fix the buggy line: self.

self.original_callable_.append (self.callable_)