src/vs/editor/standalone/browser/standaloneLanguages.ts/registerInlayHintsProvider
export function registerInlayHintsProvider(languageSelector: LanguageSelector, provider: languages.InlayHintsProvider): IDisposable {
	const languageFeaturesService = StandaloneServices.get(ILanguageFeaturesService);
	return languageFeaturesService.inlayHintsProvider.register(languageSelector, provider);
}