public function mergeFromDev($site_env, $options = ['updatedb' => false])
{
list(, $env) = $this->getSiteEnv($site_env);
$workflow = $env->mergeFromDev(['updatedb' => $options['updatedb']]);
while (!$workflow->checkProgress()) {
// @TODO: Add Symfony progress bar to indicate that something is happening.
}
$this->log()->notice('Merged the dev environment into {env}.', ['env' => $env->id]);
}