docs: public DrawerBuilder addStickyDrawerItems(@NonNull IDrawerItem... stickyDrawerItems) {
          if (this.mStickyDrawerItems == null) {
              this.mStickyDrawerItems = new ArrayList<>();
          }
  
          Collections.addAll(this.mStickyDrawerItems, stickyDrawerItems);
  
          return this;
      }