12     protected $userId;  variable in MatrixPhp\\User
20      * @param string $userId
24     public function __construct(MatrixHttpApi $api, string $userId, ?string $displayName = null) {  argument
25         Util::checkUserId($userId);
26         $this->userId = $userId;
42             return array_get($room->getMembersDisplayNames(), $this->userId, $this->userId);
46             $this->displayName = $this->api->getDisplayName($this->userId);
49         return $this->displayName ?: $this->userId;
64         return $this->api->setDisplayName($this->userId, $displayName);
75         $mxurl = $this->api->getAvatarUrl($this->userId);
94         return $this->api->setAvatarUrl($this->userId, $avatarUrl);
97     public function userId(): string {  function in MatrixPhp\\User
98         return $this->userId;