private void RegisterFilterForOnBeginRequest(RequestFilterChain filter)
 {
     if (this.onBeginRequestChain == null)
     {
         this.onBeginRequestChain = filter;
         return;
     }
     filter.Next = this.onBeginRequestChain;
     this.onBeginRequestChain = filter;
 }
 private void RegisterFilterForPostAuthorizeRequest(RequestFilterChain filter)
 {
     if (this.onPostAuthorizeRequestChain == null)
     {
         this.onPostAuthorizeRequestChain = filter;
         return;
     }
     filter.Next = this.onPostAuthorizeRequestChain;
     this.onPostAuthorizeRequestChain = filter;
 }