internal ExtensibleMessageInfo(long identity, QueueIdentity queueIdentity, MessageInfoPropertyBag propertyBag) : base(propertyBag)
 {
     this[this.propertyBag.ObjectIdentityPropertyDefinition] = new MessageIdentity(identity, queueIdentity);
 }
 internal ExtensibleMessageInfo(MessageInfoPropertyBag emptyBag) : base(emptyBag)
 {
 }