consider the partial date class below (method signatures and instance variables) which represents a day of the year: public class date { private int month; // a value between 1 and 12 private int day; // a value between 1 and the last day // of the month public int getmonth() { } // accessor method public void setmonth(int newmonth) { } // mutator method public int getday() { } // accessor method private int lastdayofmonth() { } // helper method } it has been suggested the accessor method below be added to the class to return the date one day later than the given date: public date getnextdate() { if (day