code: public static void setMultifactorAuthenticationTrustedInScope(final RequestContext requestContext) {
          val flashScope = requestContext.getFlashScope();
          flashScope.put(AbstractMultifactorTrustedDeviceWebflowConfigurer.MFA_TRUSTED_AUTHN_SCOPE_ATTR, Boolean.TRUE);
      }
docs: Sets multifactor authentication trusted in scope.
  
  @param requestContext the request context