namespace Microsoft.FSharp.Collections
{
    [CompilationMapping(SourceConstructFlags.ObjectType)]
    [CompiledName("FSharpMap`2")]
    [DebuggerDisplay("Count = {Count}")]
    [DebuggerTypeProxy(typeof(MapDebugView<?, ?>))]
    [DefaultMember("Item")]
    [Sealed]
    public sealed class FSharpMap<TKey, TValue> : ICollection<KeyValuePair<TKey, TValue>>, IDictionary<TKey, TValue>, IReadOnlyCollection<KeyValuePair<TKey, TValue>>, IReadOnlyDictionary<TKey, TValue>, IEnumerable, IEnumerable<KeyValuePair<TKey, TValue>>, IStructuralEquatable, IComparable
    {
        public FSharpMap<TKey, TValue> Change(TKey key, FSharpFunc<FSharpOption<TValue>, FSharpOption<TValue>> f);
    }
}