src/vs/editor/browser/viewParts/minimap/minimap.ts/InnerMinimap/onLinesDeleted
class InnerMinimap:	public onLinesDeleted(deleteFromLineNumber: number, deleteToLineNumber: number): boolean {
		if (this._lastRenderData) {
			this._lastRenderData.onLinesDeleted(deleteFromLineNumber, deleteToLineNumber);
		}
		return true;
	}