<PackageReference Include="System.Collections.Immutable" Version="11.0.0-preview.6.26359.118" />

System.Collections.Frozen.Constants

static class Constants
namespace System.Collections.Frozen { internal static class Constants { public const int MaxItemsInSmallFrozenCollection = 4; public const int MaxItemsInSmallValueTypeFrozenCollection = 10; public static bool IsKnownComparable<T>(); } }