src/vs/editor/browser/widget/diffEditorWidget.ts/InlineViewZonesComputer/_createOriginalMarginDomNodeForModifiedForeignViewZoneInAddedRegion
class InlineViewZonesComputer:	protected _createOriginalMarginDomNodeForModifiedForeignViewZoneInAddedRegion(): HTMLDivElement | null {
		const result = document.createElement('div');
		result.className = 'inline-added-margin-view-zone';
		return result;
	}