Title: Recursive function
Goal: Reorder the parameters of the `sum/3' function which has three parameters based on the list `[2,1,3]'.
Parameters: [{file,"test2.erl"},{position,37},{order,[2,1,3]}].
Documentation: In this test case, the parameters of the recursive function
 named `sum', has to be reordered based on the new order list. During the refactoring
 the parameters need to be reordered in the definition of the function and
 in the calling place too. The refactoring can be executed.
