interface SpanContextInterface

interface SpanContextInterface {
    public static function createFromRemoteParent(string $traceId, string $spanId, int $traceFlags = TraceFlags::DEFAULT, ?TraceStateInterface $traceState = null) : SpanContextInterface;
    public static function getInvalid() : SpanContextInterface;
    public static function create(string $traceId, string $spanId, int $traceFlags = TraceFlags::DEFAULT, ?TraceStateInterface $traceState = null) : SpanContextInterface;
    
    /** @psalm-mutation-free */
    public function getTraceId() : string;
    public function getTraceIdBinary() : string;
    
    /** @psalm-mutation-free */
    public function getSpanId() : string;
    public function getSpanIdBinary() : string;
    public function getTraceFlags() : int;
    public function getTraceState() : ?TraceStateInterface;
    public function isValid() : bool;
    public function isRemote() : bool;
    public function isSampled() : bool;

}