class ListPopupWindow implements ShowableListMenu {

    @Override
    public boolean isShowing() {
        return mPopup.isShowing();
    }

    public  ListPopupWindow(@NonNull Context context);
    public  ListPopupWindow(@NonNull Context context, @Nullable AttributeSet attrs);
    public  ListPopupWindow(@NonNull Context context, @Nullable AttributeSet attrs,
            @AttrRes int defStyleAttr);
    public  ListPopupWindow(@NonNull Context context, @Nullable AttributeSet attrs,
            @AttrRes int defStyleAttr, @StyleRes int defStyleRes);

}