Method oldGetKey

src/component/helper/BrushController.ts:407–409

(cover: BrushCover, index: number)

        }

        function oldGetKey(cover: BrushCover, index: number): string {
            return getKey(cover.__brushOption, index);
        }

        function addOrUpdate(newIndex: number, oldIndex?: number): void {
            const newBrushInternal = coverConfigList[newIndex];