src/vs/editor/contrib/suggest/suggest.ts/showSimpleSuggestions
export function showSimpleSuggestions(editor: ICodeEditor, suggestions: modes.CompletionItem[]) {
	setTimeout(() => {
		_provider.onlyOnceSuggestions.push(...suggestions);
		editor.getContribution<SuggestController>('editor.contrib.suggestController').triggerSuggest(new Set<modes.CompletionItemProvider>().add(_provider));
	}, 0);
}