public function get($key)
    {
        return $this->container->hasParameter($key) ? $this->container->getParameter($key) : null;
    }
public function get($key)
    {
        return $this->container->hasParameter($key) ? $this->container->getParameter($key) : null;
    }
public function get ( $ key ) { return $ this -> container -> hasParameter ( $ key ) ? $ this -> container -> getParameter ( $ key ) : null ; }
Get a setting value.

@param $key string
@return string|null
Get a setting value .