docs: public static boolean isUnifiedELAvailable()
      {
          if (unifiedELAvailable == null)
          {
              try
              {
                  // Check if the UEL classes are available.
                  // If the JSP EL classes are loaded first, UEL will not work
                  // properly, hence it will be disabled.
                  unifiedELAvailable = (
                          Class.forName("javax.el.ValueReference") != null
                       && Class.forName("javax.el.ValueExpression")
                                  .getMethod("getValueReference", ELContext.class) != null
                  );
              }
              catch (Throwable t)
              {
                  //log.log(Level.FINE, "Error loading class (could be normal)", t);
                  unifiedELAvailable = false;
              }
  
              log.info("MyFaces Unified EL support " + (unifiedELAvailable ? "enabled" : "disabled"));
          }
          return unifiedELAvailable;
      }