Write a method equals that could be added to the inttree class. (on your handout this method is called "equals", but practice-it needs to use the name "equals" for another purpose, so we'll call it "equals2" here.) the method accepts another binary tree of integers as a parameter and compares the two trees to see if they are equal to each other. for example, if variables of type inttree called t1 and t2 have been initialized, then the call of t1.equals2(t2) will return true if the trees are equal and false if otherwise.