src/Promise.php
public function wait($unwrap = true)
    {
        $loop = $this->loop;
        while (HttpPromise::PENDING === $this->getState()) {
            $loop->futureTick(function () use ($loop) {
                $loop->stop();
            });
            $loop->run();
        }

        if ($unwrap) {
            if (HttpPromise::REJECTED == $this->getState()) {
                throw $this->exception;
            }

            return $this->response;
        }
    }
public function wait($unwrap = true)
    {
        $loop = $this->loop;
        while (HttpPromise::PENDING === $this->getState()) {
            $loop->futureTick(function () use ($loop) {
                $loop->stop();
            });
            $loop->run();
        }

        if ($unwrap) {
            if (HttpPromise::REJECTED == $this->getState()) {
                throw $this->exception;
            }

            return $this->response;
        }
    }
{@inheritdoc}