private function prepareRequest($method, $url, array $requestParameters)
{
$env = Environment::mock(['SCRIPT_NAME' => '/index.php', 'REQUEST_URI' => $url, 'REQUEST_METHOD' => $method]);
$parts = explode('?', $url);
if (isset($parts[1])) {
$env['QUERY_STRING'] = $parts[1];
}
$uri = Uri::createFromEnvironment($env);
$headers = Headers::createFromEnvironment($env);
$cookies = [];
$serverParams = $env->all();
$body = new RequestBody();
$body->write(json_encode($requestParameters));
$request = new Request($method, $uri, $headers, $cookies, $serverParams, $body);
return $request->withHeader('Content-Type', 'application/json');
}
