src/vs/workbench/contrib/mergeEditor/browser/view/viewZones.ts/Placeholder/create
class Placeholder:	override create(
		viewZoneChangeAccessor: IViewZoneChangeAccessor,
		viewZoneIdsToCleanUp: string[],
		disposableStore: DisposableStore
	): void {
		viewZoneIdsToCleanUp.push(
			viewZoneChangeAccessor.addZone({
				afterLineNumber: this.afterLineNumber,
				heightInPx: this.heightPx,
				domNode: $('div.conflict-actions-placeholder'),
			})
		);
	}