*/
    private static class CollectingProvider<T, C extends Collection<? extends T>> extends AbstractMinimalProvider<C> {
        private final Class<C> type;
        private final List<ProviderInternal<? extends Iterable<? extends T>>> providers;
        private final Supplier<ImmutableCollection.Builder<T>> collectionFactory;

            return collector.toString();
        }
    }

    private static class CollectingProvider<K, V> extends AbstractMinimalProvider<Map<K, V>> {
        private final List<ExecutionTimeValue<? extends Map<? extends K, ? extends V>>> values;

        public CollectingProvider(List<ExecutionTimeValue<? extends Map<? extends K, ? extends V>>> values) {
            this.values = values;
        }