/**
* Processes a request that will vary with Accept header.
*
* @param \Symfony\Component\HttpFoundation\Request $request
* The current request object.
*
* @return mixed
*/
public function content(Request
$request) { if ($request->
getRequestFormat() === 'json' &&
$request->query->
get('_wrapper_format'
) === 'drupal_ajax'
) { $response =
new CacheableAjaxResponse(['content' => 'oh hai this is ajax'
]);
} elseif ($request->
getRequestFormat() === 'json'
) { $response =
new CacheableJsonResponse(['content' => 'oh hai this is json'
]);
} else { $response =
new CacheableResponse("<p>oh hai this is html.</p>"
);
} $response->
addCacheableDependency((new CacheableMetadata())->
addCacheContexts(['url.query_args:_wrapper_format'
]));
return $response;
}}