class SwipeRefreshLayout extends ViewGroup implements NestedScrollingParent,
        NestedScrollingChild {

    public void setOnChildScrollUpCallback(@Nullable OnChildScrollUpCallback callback) {
        mChildScrollUpCallback = callback;
    }

    public  SwipeRefreshLayout(@NonNull Context context);
    public  SwipeRefreshLayout(@NonNull Context context, @Nullable AttributeSet attrs);

}