namespace System.Text.Json.Serialization.Metadata
{
    [EditorBrowsable(EditorBrowsableState.Never)]
    public static class JsonMetadataServices
    {
        public static JsonTypeInfo<TCollection>! CreateImmutableDictionaryInfo<TCollection, TKey, TValue>(JsonSerializerOptions! options, JsonCollectionInfoValues<TCollection>! collectionInfo, Func<IEnumerable<KeyValuePair<TKey, TValue>>!, TCollection>! createRangeFunc)
            where TCollection, IReadOnlyDictionary<TKey, TValue>!
            where TKey, notnull;
    }
}