public function &offsetGet($key)
    {
        if(!$this->has($key))
            return null;

        return DotArray::getReference($this->storage, $key);
    }
public function &offsetGet($key)
    {
        if(!$this->has($key))
            return null;

        return DotArray::getReference($this->storage, $key);
    }
public function & offsetGet ( $ key ) { if ( ! $ this -> has ( $ key ) ) return null ; return DotArray :: getReference ( $ this -> storage , $ key ) ; }
Get config through array offset
@param string $key
@return mixed
Get config through array offset