public void SetValueWithoutNotify(bool newValue)

bool

This is useful when you want to change the Foldout's Toggle value without triggering events. For example, let's say you set up a Foldout to trigger an animation, but you only want to trigger the animation when a user clicks the Foldout's Toggle, not when you change the Toggle's value via code (for example, inside another validation). You could use this method change the value "silently".