public static function adapter($name = null) {
		if (!$name) {
			if (!$names = array_keys(static::$_configurations)) {
				return;
			}
			$name = end($names);
		}
		return parent::adapter($name);
	}
public static function adapter($name = null) {
		if (!$name) {
			if (!$names = array_keys(static::$_configurations)) {
				return;
			}
			$name = end($names);
		}
		return parent::adapter($name);
	}
public static function adapter ( $ name = null ) { if ( ! $ name ) { if ( ! $ names = array_keys ( static :: $ _configurations ) ) { return ; } $ name = end ( $ names ) ; } return parent :: adapter ( $ name ) ; }
Returns the adapter object instance of the named configuration.

@param string $name Named configuration. If not set, the last configured
adapter object instance will be returned.
@return object Adapter instance.
Returns the adapter object instance of the named configuration .