question: ObjectAnimator animateBoundScroll ( ) { float curScroll = getStackScroll ( ) ; float newScroll = getBoundedStackScroll ( curScroll ) ; if ( Float . compare ( newScroll , curScroll ) != 0 ) { animateScroll ( curScroll , newScroll , null ) ; } return mScrollAnimator ; }
target:  Animates the stack scroll into bounds