/**
* [add description]
*
* @param Provider $provider [description]
*
* @return [type] [description]
*/
public function add(Provider $provider)
{
$provider->setApplication($this->app);
$providerName = get_class($provider);
if (!isset($this->providers[$providerName])) {
$this->providers[$providerName] = $provider;
}
}