.

src/WireMock.Net.Minimal/WebSockets/WebSocketBuilder.cs

@@ -1,6 +1,5 @@
 // Copyright © WireMock.Net
 
-using System;
 using System.Net.WebSockets;
 using Stef.Validation;
 using WireMock.Matchers;

src/WireMock.Net.Minimal/WebSockets/WebSocketMessageBuilder.cs

@@ -42,8 +42,7 @@ internal class WebSocketMessageBuilder : IWebSocketMessageBuilder
     public IWebSocketMessageBuilder WithDelay(int delayInMilliseconds)
     {
         Guard.Condition(delayInMilliseconds, d => d >= 0, nameof(delayInMilliseconds));
-        Delay = TimeSpan.FromMilliseconds(delayInMilliseconds);
-        return this;
+        return WithDelay(TimeSpan.FromMilliseconds(delayInMilliseconds));
     }
 
     public IWebSocketMessageBuilder Close()