Scrolls a specific area of the content so that it is visible in the receiver.
- iOS 2.0+
- tvOS 9.0+
A rectangle defining an area of the content view. The rectangle should be in the coordinate space of the scroll view.
trueif the scrolling should be animated,
falseif it should be immediate.
This method scrolls the content view so that the area defined by
rect is just visible inside the scroll view. If the area is already visible, the method does nothing.