Title: The name of the function with its arity increased by one is an autoimported function
Goal: Generalize the function `length/0' by selecting the number `0', the new parameter is `N'.
Parameters: [{file,"gen6.erl"},{posrange,{53,53}},{varname,"N"}].
Documentation: The result of the transformation would be the function `length/1', but it is an auto-imported function, so the name collision makes the refactoring invalid.
