src/vs/workbench/services/decorations/browser/decorationsService.ts/DecorationsService/constructor
class DecorationsService:	constructor(
		@IThemeService themeService: IThemeService,
		@IUriIdentityService private readonly _uriIdentityService: IUriIdentityService,
	) {
		this._decorationStyles = new DecorationStyles(themeService);

		this._onDidChangeDecorationsDelayed.event(event => { this._onDidChangeDecorations.fire(new FileDecorationChangeEvent(event)); });
	}