docs: static boolean canCheckForV7Toolbar() {
          if (sToolbarCheck == null) {
              try {
                  Class.forName("android.support.v7.widget.Toolbar");
                  sToolbarCheck = Boolean.TRUE;
              } catch (ClassNotFoundException e) {
                  sToolbarCheck = Boolean.FALSE;
              }
          }
          return sToolbarCheck;
      }