public function set( $key, $value = null, $group = '' )
	{
		$this->checkLoaded();
		$this->modified = true;

		if ( is_array($key) ) {
			foreach ( $key as $k => $v ) {
				SettingsUtilities::set($this->storage, $k, $v);
			}
		} else {
			SettingsUtilities::set($this->storage, $key, $value);
		}
	}