human
Solve the following python programming problem given the following code:
def citation_list(self) : 
    addon_short_name = self.addon_short_name 
    Provider = self.Provider 
    @ must_be_contributor_or_public 
    @ must_have_addon (addon_short_name, 'node') 
    def _citation_list(auth, node_addon, list_id = None, **kwargs) : 
        ' Returns a list of citations
            ' 
        show = request.args.get ('view', 'all') 
        return Provider ().citation_list (node_addon, auth.user, list_id, show) 
_citation_list.__name__ = '{0}_citation_list'.format (addon_short_name) 
    return Provider 

    
    

    Fix the buggy line: return Provider
assistant
#Here is Python code to fix the buggy line: return Provider
.

return _citation_list