v1 vs v2

v1.php

public function appendResponse(Response $response)
{
    try {
        $events = \json_try_decode($response->getBody(), true);
    } catch (DecodeErrorException $e) {
        $this->logger->emergency('Failed to decode response body as JSON', ['exception' => $e]);

        throw new DecodingFailedException('Failed to decode response body as JSON', $e->getCode(), $e);
    }

    foreach ($events as $event) {
        $this->appendEvent($event);
    }
}

v2.php

public function appendResponse(Response $response)
{
    try {
        $events = \json_try_decode(yield $response->getBody()->read(), true);
    } catch (DecodeErrorException $e) {
        $this->logger->emergency('Failed to decode response body as JSON', ['exception' => $e]);

        throw new DecodingFailedException('Failed to decode response body as JSON', $e->getCode(), $e);
    }

    foreach ($events as $event) {
        $this->appendEvent($event);
    }
}