public HttpInstrumentationRequest(HttpInstrumentationHandler handler, Uri uri)
     : base(uri)
 {
     Handler     = handler;
     TestRunner  = handler.TestRunner;
     finishedTcs = new TaskCompletionSource <bool> ();
     ME          = $"{GetType ().Name}({TestRunner.EffectiveType})";
 }
 HttpInstrumentationHandler(HttpInstrumentationHandler other)
     : base(other)
 {
     Content         = other.Content;
     CloseConnection = CloseConnection;
     Flags           = other.Flags;
     Target          = other.Target;
     AuthManager     = other.AuthManager;
     readyTcs        = new TaskCompletionSource <bool> ();
 }