get_difference: given two lists of integers as input, it returns a list which, if added to the second one, would result in a list containing the same elements as the first one. If the second list is not a subset of the first one, then this function should return an empty list. Note that once again, the order in which the elements appear in both list is not important. For example: >>> get_difference [1, 2, 3, 4, 5], [2, 4]) [1, 3, 5] >>> get_difference [1, 2, 1, 3], [1, 3]) [2, 1] >>> get_differencel (1, 2, 1], [2, 2]) []