namespace System.ServiceModel.Channels { internal class MessageIDHeader : AddressingHeader { public UniqueId MessageId { get; } public static MessageIDHeader Create(UniqueId messageId, AddressingVersion addressingVersion); public static UniqueId ReadHeaderValue(XmlDictionaryReader reader, AddressingVersion version); public static MessageIDHeader ReadHeader(XmlDictionaryReader reader, AddressingVersion version, string actor, bool mustUnderstand, bool relay); } }