isStateImplicit = function isStateImplicit() {

        for (var keysym in guac_keyboard.pressed) {
            if (!implicitlyPressed[keysym])
                return false;
        }

        return true;

    }
Returns whether all currently pressed keys were implicitly pressed. A
key is implicitly pressed if its status was inferred indirectly from
inspection of other key events.

@private
@returns {Boolean}
    true if all currently pressed keys were implicitly pressed, false
    otherwise.