static <C> @NonNull SuggestionProvider<C> blocking(
            final @NonNull BlockingSuggestionProvider<C> blockingSuggestionProvider
    ) {
        return blockingSuggestionProvider;
    }
Utility method to simplify implementing {@link BlockingSuggestionProvider}
using a lambda, for methods that accept a {@link SuggestionProvider}.

@param blockingSuggestionProvider suggestion provider
@param <C>                        command sender type
@return suggestion provider
cloud-core/src/main/java/org/incendo/cloud/suggestion/SuggestionProvider.java