static <C> @NonNull SuggestionProvider<C> suggesting(
            final @NonNull Iterable<? extends @NonNull Suggestion> suggestions
    ) {
        return blocking((ctx, input) -> suggestions);
    }
Create a {@link SuggestionProvider} that provides constant suggestions.

@param suggestions list of strings to suggest
@param <C>         command sender type
@return suggestion provider
cloud-core/src/main/java/org/incendo/cloud/suggestion/SuggestionProvider.java