Define a public class named Toggler with a single public instance method named toggle that takes no parameters and returns a boolean. Toggler should also provide a single public constructor that accepts a boolean argument and sets the initial state of the Toggler instance.

Toggler maintains one piece of private state: the boolean. Calling toggle changes the boolean from true to false or false to true and returns the new (not the old) state of the boolean. So, for example:

Note that the internal state should be private.