question: public DrawerBuilder addStickyDrawerItems ( @ NonNull IDrawerItem ... stickyDrawerItems ) { if ( this . mStickyDrawerItems == null ) { this . mStickyDrawerItems = new ArrayList < > ( ) ; } Collections . addAll ( this . mStickyDrawerItems , IdDistributor . checkIds ( stickyDrawerItems ) ) ; return this ; }
target:  Add a initial DrawerItem or a DrawerItem Array for the StickyDrawerFooter