Response::__construct( int $status = 200, array $headers = [], string|resource|WordPress\AiClientDependencies\Psr\Http\Message\StreamInterface|null $body = null, string $version = '1.1', string|null $reason = null )

31    public function __construct(int $status = 200, array $headers = [], $body = null, string $version = '1.1', ?string $reason = null)32    {33        // If we got no body, defer initialization of the stream until Response::getBody()34        if ('' !== $body && null !== $body) {35            $this->stream = Stream::create($body);36        }37        $this->statusCode = $status;38        $this->setHeaders($headers);39        if (null === $reason && isset(self::PHRASES[$this->statusCode])) {40            $this->reasonPhrase = self::PHRASES[$status];41        } else {42            $this->reasonPhrase = $reason ?? '';43        }44        $this->protocol = $version;45    }