Partial Type
System/Collections/Immutable/ImmutableSortedDictionary_2.cs
System/Collections/Immutable/ImmutableSortedDictionary_2.Builder.cs
System/Collections/Immutable/ImmutableSortedDictionary_2.Enumerator.cs
System/Collections/Immutable/ImmutableSortedDictionary_2.Node.cs