code: public static boolean isLafAqua() {
          ensureValidCache();
          if (cachedIsLafAqua == null) {
              cachedIsLafAqua = Boolean.valueOf(computeIsLafAqua());
          }
          return cachedIsLafAqua.booleanValue();
      }
docs: Lazily checks and answers whether the Aqua look&amp;feel is active.
  
  @return {@code true} if the current look&amp;feel is Aqua