getServiceContainer()->getPageRestHelperFactory(); $helper = $helperFactory->newHtmlMessageOutputHelper(); $this->assertInstanceOf( HtmlMessageOutputHelper::class, $helper ); $this->assertInstanceOf( HtmlOutputHelper::class, $helper ); $helper = $helperFactory->newHtmlOutputRendererHelper(); $this->assertInstanceOf( HtmlOutputRendererHelper::class, $helper ); $this->assertInstanceOf( HtmlOutputHelper::class, $helper ); } }