human
Solve the following python programming problem given the following code:
def __call__(self, user, version, last_sync = None, app = None) : 
    def get_products() : 
        return sorted (Product.by_domain (user.domain, include_archived = True), key = (lambda product : product.code)) 
return _simple_fixture_generator (self, self.id, 'product', PRODUCT_FIELDS, get_products, last_sync) 

    
    

    Fix the buggy line: return _simple_fixture_generator (self, self.id, 'product', PRODUCT_FIELDS, get_products, last_sync)
assistant
#Here is Python program to fix the buggy line: return _simple_fixture_generator (self, self.

return _simple_fixture_generator (user, self.id, 'product', PRODUCT_FIELDS, get_products, last_sync)