protected override Stream OnEndAcceptUpgrade(IAsyncResult result, out SecurityMessageProperty remoteSecurity)
 {
     return(AcceptUpgradeAsyncResult.End(result, out remoteSecurity, out this.channelBindingToken));
 }
 protected override Stream OnEndAcceptUpgrade(IAsyncResult result,
                                              out SecurityMessageProperty remoteSecurity)
 {
     return(AcceptUpgradeAsyncResult.End(result, out remoteSecurity));
 }