code: public void popParameterStack()
      {
          if (TraceComponent.isAnyTracingEnabled()&&logger.isLoggable (Level.FINE)) {  //306998.15
              logger.logp(Level.FINE, CLASS_NAME,"popParameterStack", "entry");
          } 
          if (WCCustomProperties.CHECK_REQUEST_OBJECT_IN_USE){
              checkRequestObjectInUse();
          }
  
          try
          {
              SRTServletRequestThreadData.getInstance().setParameters((Hashtable) _paramStack.pop());
          } catch (java.util.EmptyStackException empty)
          {
              if (TraceComponent.isAnyTracingEnabled()&&logger.isLoggable (Level.FINE)) {  //306998.15
                  logger.logp(Level.FINE, CLASS_NAME,"popParameterStack", "Unable to remove item from stack", empty);
              }
          }
          if (TraceComponent.isAnyTracingEnabled()&&logger.isLoggable (Level.FINE) &&  SRTServletRequestThreadData.getInstance().getParameters() !=null)  //306998.15
          {
              debugParams(SRTServletRequestThreadData.getInstance().getParameters());
          }
      }
docs: Revert the state of the parameters which was saved before an include call