public function getServerId(): \Psr\Http\Message\UriInterface
    {
        if (!$this->serverId) {
            return new Uri();
        }

        return $this->serverId;
    }
public function getServerId(): \Psr\Http\Message\UriInterface
    {
        if (!$this->serverId) {
            return new Uri();
        }

        return $this->serverId;
    }
public function getServerId ( ) : \ Psr \ Http \ Message \ UriInterface { if ( ! $ this -> serverId ) { return new Uri ( ) ; } return $ this -> serverId ; }
Returns the id of the Server object representing the storage server that this file is on.

@return \Psr\Http\Message\UriInterface
Returns the id of the Server object representing the storage server that this file is on .