human
Solve the following python programming problem given the following code:
def add_url_rule(self, rule, endpoint, view_func = None, **options) : 
    'Like :meth:`Flask.add_url_rule` but for a module.  The endpoint for
        the :func:`url_for` function is prefixed with the name of the module.
        ' 
    def register_rule(state) : 
        the_rule = rule 
        if state.url_prefix : 
            the_rule = (state.url_prefix + rule) 
state.app.add_url_rule (the_rule, ('%s.%s' % (self.name, endpoint)), view_func, ** options) 
self._record (rule) 

    
    

    Fix the buggy line: self._record (rule)
assistant
#Here is Python program to fix the buggy line: self.

self._record (def register_rule()