code: public static void introspecthelper(
          Object bean,
          String prop,
          String value,
          ServletRequest request,
          String param,
          boolean ignoreMethodNF)
          throws JspCoreException {
          if (System.getSecurityManager() != null) {
              try {
                  PrivilegedIntrospectHelper dp =
                      new PrivilegedIntrospectHelper(bean, prop, value, request, param, ignoreMethodNF);
                  AccessController.doPrivileged(dp);
              }
              catch (PrivilegedActionException pe) {
                  Exception e = pe.getException();
                  throw (JspCoreException) e;
              }
          }
          else {
              internalIntrospecthelper(bean, prop, value, request, param, ignoreMethodNF);
          }
      }
docs: __begin introspecthelperMethod