*/ interface RequestFactory { /** * Creates a new PSR-7 request. * * @param string $method * @param string|UriInterface $uri * @param array $headers * @param resource|string|StreamInterface|null $body * @param string $protocolVersion * * @return RequestInterface */ public function createRequest( $method, $uri, array $headers = [], $body = null, $protocolVersion = '1.1' ); }