Has public yield, complete, and fail methods. */ private $stream; public function __construct() { $this->stream = new class implements Stream { use Internal\Yielder { createStream as public; } }; } /** * Returns a Stream that can be given to an API consumer. This method may be called only once! * * @return Stream * * @psalm-return Stream */ public function stream(): Stream { /** @psalm-suppress UndefinedInterfaceMethod */ return $this->stream->createStream(); } /** * Yields a value to the stream. * * @param mixed $value * * @psalm-param TValue $value * * @return Promise Resolves with null when the yielded value has been consumed or fails with * {@see DisposedException} if the stream has been destroyed. */ public function yield($value): Promise { /** @psalm-suppress UndefinedInterfaceMethod */ return $this->stream->yield($value); } /** * Completes the stream. * * @return void */ public function complete() { /** @psalm-suppress UndefinedInterfaceMethod */ $this->stream->complete(); } /** * Fails the stream with the given reason. * * @param \Throwable $reason * * @return void */ public function fail(\Throwable $reason) { /** @psalm-suppress UndefinedInterfaceMethod */ $this->stream->fail($reason); } }