src/vs/workbench/services/decorations/browser/decorationsService.ts/DecorationRule/removeCSSRules
class DecorationRule:	removeCSSRules(element: HTMLStyleElement): void {
		removeCSSRulesContainingSelector(this.itemColorClassName, element);
		removeCSSRulesContainingSelector(this.itemBadgeClassName, element);
		removeCSSRulesContainingSelector(this.bubbleBadgeClassName, element);
		removeCSSRulesContainingSelector(this.iconBadgeClassName, element);
	}