Sometimes mutators are useful. But they can be tricky to think about. For
example, what does this sequence of statements make? First, we create a
variable box of type Rectangle, and put a Rectangle in it. Then, we create
another variable of the same type, but I want it to be the same. So, I'm just
going to use box. Now, I actually realize I need to get the original box out of
the way. So, I'm just going to translate it. So, this would look something
like, we would create a rectangle. And then, we create another rectangle that's
the same. Then, we translate it out of the way. What is the value of box.getX?
What is the value of box2.getX?