294    * Disable a render stage

   295    * @param string stage

   296    * @return null

   297    */

   298   

   299   public function disable_rule($rule)

   300   {

   301     foreach ( $this->rules as $i => $current_rule )

   302     {

   303       if ( $current_rule === $rule )

   304       {

   305         unset($this->rules[$i]);

   306         return null;

   307       }

   308     }

   309     return null;

   310   }

   311   

   312   /**