_getScrollSpeed() {
        const lineHeight = this._context.configuration.options.get(67 /* EditorOption.lineHeight */);
        const viewportInLines = this._context.configuration.options.get(145 /* EditorOption.layoutInfo */).height / lineHeight;
        const outsideDistanceInLines = this._position.outsideDistance / lineHeight;
        if (outsideDistanceInLines <= 1.5) {
            return Math.max(30, viewportInLines * (1 + outsideDistanceInLines));
        }
        if (outsideDistanceInLines <= 3) {
            return Math.max(60, viewportInLines * (2 + outsideDistanceInLines));
        }
        return Math.max(200, viewportInLines * (7 + outsideDistanceInLines));
    }
get the number of lines per second to auto-scroll