Method add

packages/node-editor/src/domain/value-objects/Position.ts:26–28

* Creates a new Position by adding offset * 通过添加偏移量创建新的位置

(offset: Position)

     * 通过添加偏移量创建新的位置
     */
    add(offset: Position): Position {
        return new Position(this._x + offset._x, this._y + offset._y);
    }

    /**
     * Creates a new Position by subtracting another position