src/Utils/Helpers.php
public static function wantsJsonApi($request)
    {
        $acceptable = $request->getAcceptableContentTypes();

        return isset($acceptable[0]) && IlluminateStr::contains($acceptable[0], MediaType::JSON_API_SUB_TYPE);
    }
public static function wantsJsonApi($request)
    {
        $acceptable = $request->getAcceptableContentTypes();

        return isset($acceptable[0]) && IlluminateStr::contains($acceptable[0], MediaType::JSON_API_SUB_TYPE);
    }
Does the request want JSON API content?

@param SymfonyRequest $request
@return bool