public function getProvider($key) {
        if (!isset($this->providers[$key])) {
            return null;
        }
        
        return $this->providers[$key];
    }
public function getProvider($key) {
        if (!isset($this->providers[$key])) {
            return null;
        }
        
        return $this->providers[$key];
    }
public function getProvider ( $ key ) { if ( ! isset ( $ this -> providers [ $ key ] ) ) { return null ; } return $ this -> providers [ $ key ] ; }
Get provider by key

@param string $key
@return object
Get provider by key