Baikal\Core\Server::initServer PHP Method

    protected function initServer()
    {
        if ($this->authType === 'Basic') {
            $authBackend = new \Baikal\Core\PDOBasicAuth($this->pdo, $this->authRealm);
        } else {
            $authBackend = new \Sabre\DAV\Auth\Backend\PDO($this->pdo);
            $authBackend->setRealm($this->authRealm);
        }
        $principalBackend = new \Sabre\DAVACL\PrincipalBackend\PDO($this->pdo);
        $nodes = [new \Sabre\CalDAV\Principal\Collection($principalBackend)];
        if ($this->enableCalDAV) {
            $calendarBackend = new \Sabre\CalDAV\Backend\PDO($this->pdo);
            $nodes[] = new \Sabre\CalDAV\CalendarRoot($principalBackend, $calendarBackend);
        }
        if ($this->enableCardDAV) {
            $carddavBackend = new \Sabre\CardDAV\Backend\PDO($this->pdo);
            $nodes[] = new \Sabre\CardDAV\AddressBookRoot($principalBackend, $carddavBackend);
        }
        $this->server = new \Sabre\DAV\Server($nodes);
        $this->server->setBaseUri($this->baseUri);
        $this->server->addPlugin(new \Sabre\DAV\Auth\Plugin($authBackend, $this->authRealm));
        $this->server->addPlugin(new \Sabre\DAVACL\Plugin());
        $this->server->addPlugin(new \Sabre\DAV\Browser\Plugin());
        $this->server->addPlugin(new \Sabre\DAV\PropertyStorage\Plugin(new \Sabre\DAV\PropertyStorage\Backend\PDO($this->pdo)));
        // WebDAV-Sync!
        $this->server->addPlugin(new \Sabre\DAV\Sync\Plugin());
        if ($this->enableCalDAV) {
            $this->server->addPlugin(new \Sabre\CalDAV\Plugin());
            $this->server->addPlugin(new \Sabre\CalDAV\ICSExportPlugin());
            $this->server->addPlugin(new \Sabre\CalDAV\Schedule\Plugin());
        }
        if ($this->enableCardDAV) {
            $this->server->addPlugin(new \Sabre\CardDAV\Plugin());
            $this->server->addPlugin(new \Sabre\CardDAV\VCFExportPlugin());
        }
    }