docs: public void removeAllStickyFooterItems() {
          if (mDrawerBuilder.mStickyDrawerItems != null) {
              mDrawerBuilder.mStickyDrawerItems.clear();
          }
          if (mDrawerBuilder.mStickyFooterView != null) {
              mDrawerBuilder.mStickyFooterView.setVisibility(View.GONE);
          }
      }