public static function getCoordinateMap($key=NULL)
    {
        if ($key) {
            return isset(self::$_keyCoordinateMap[$key]) ? self::$_keyCoordinateMap[$key] : NULL;
        } else {
            return self::$_keyCoordinateMap;
        }
    }
public static function getCoordinateMap($key=NULL)
    {
        if ($key) {
            return isset(self::$_keyCoordinateMap[$key]) ? self::$_keyCoordinateMap[$key] : NULL;
        } else {
            return self::$_keyCoordinateMap;
        }
    }
public static function getCoordinateMap ( $ key = NULL ) { if ( $ key ) { return isset ( self :: $ _keyCoordinateMap [ $ key ] ) ? self :: $ _keyCoordinateMap [ $ key ] : NULL ; } else { return self :: $ _keyCoordinateMap ; } }
Get Coordinate Map by key or all from the actived sheet

@param string|int $key Key set by addRow()
@return string|array Coordinate string | Key-Coordinate array
Get Coordinate Map by key or all from the actived sheet