src/vs/workbench/services/themes/browser/workbenchThemeService.ts/WorkbenchThemeService/setFileIconTheme
class WorkbenchThemeService:	public async setFileIconTheme(iconThemeOrId: string | undefined | IWorkbenchFileIconTheme, settingsTarget: ThemeSettingTarget): Promise<IWorkbenchFileIconTheme> {
		return this.fileIconThemeSequencer.queue(async () => {
			return this.internalSetFileIconTheme(iconThemeOrId, settingsTarget);
		});
	}