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