<PackageReference Include="System.ServiceModel.Primitives" Version="6.0.0" />

System.ServiceModel.Channels.SequenceRangeCollection

abstract class SequenceRangeCollection
namespace System.ServiceModel.Channels { internal abstract class SequenceRangeCollection { public static SequenceRangeCollection Empty { get; } public abstract SequenceRange this[int index] { get; } public abstract int Count { get; } public abstract bool Contains(long number); public abstract SequenceRangeCollection MergeWith(long number); public abstract SequenceRangeCollection MergeWith(SequenceRange range); protected SequenceRangeCollection(); } }