material-sheet-fab/src/main/java/io/codetail/animation/SupportAnimator.java
public SupportAnimator reverse() {
        if(isRunning()){
            return null;
        }

        RevealAnimator target = mTarget.get();
        if(target != null){
            return target.startReverseAnimation();
        }

        return null;
    }
public SupportAnimator reverse() {
        if(isRunning()){
            return null;
        }

        RevealAnimator target = mTarget.get();
        if(target != null){
            return target.startReverseAnimation();
        }

        return null;
    }
Experimental feature