public function startBuild($env = null, $options = array())
    {
        $env = $this->getEnvUuid(null === $env ? $this->config->getEnv() : $env);
        $content = json_encode($options);
        $data = json_decode($this->sendHttpRequest($this->config->getEndpoint().'/api/v2/builds/env/'.$env, 'POST', array('content' => $content), array('Content-Type: application/json')), true);

        return new Build\Build($env, $data);
    }