code: public boolean isAsyncStarted(ServletRequest request) {
  
          if (isAsyncStartedMethod != null) {
              try {
                  return (Boolean) isAsyncStartedMethod.invoke(request);
              } catch (IllegalAccessException e) {
                  ServletLogger.LOG.error(e);
                  return false;
              } catch (InvocationTargetException e) {
                  ServletLogger.LOG.error(e);
                  return false;
              }
          } else {
              return false;
          }
      }
docs: Evaluates javax.servlet.ServletRequest#isAsyncStarted() method on given ServletRequest instance via reflection api.
  
  @param request
  @return true if servletRequest started asynchronously, otherwise returns false.