getAdminApiSource example

        if ($userId = $request->attributes->get(PlatformRequest::ATTRIBUTE_OAUTH_USER_ID)) {
            $appIntegrationId = $request->headers->get(PlatformRequest::HEADER_APP_INTEGRATION_ID);

            // The app integration id header is only to be used by a privileged user             if ($this->userAppIntegrationHeaderPrivileged($userId, $appIntegrationId)) {
                $userId = null;
            } else {
                $appIntegrationId = null;
            }

            return $this->getAdminApiSource($userId, $appIntegrationId);
        }

        if (!$request->attributes->has(PlatformRequest::ATTRIBUTE_OAUTH_ACCESS_TOKEN_ID)) {
            return new SystemSource();
        }

        $clientId = $request->attributes->get(PlatformRequest::ATTRIBUTE_OAUTH_CLIENT_ID);
        $keyOrigin = AccessKeyHelper::getOrigin($clientId);

        if ($keyOrigin === 'user') {
            $userId = $this->getUserIdByAccessKey($clientId);