feat: e2e test

src/main/java/dev.toad/msg/build/MessageNeeds.java

@@ -0,0 +1,18 @@
+package dev.toad.msg.build;
+
+import java.net.InetSocketAddress;
+
+public final class MessageNeeds {
+
+  public interface Destination {
+    MessageNeeds.Type addr(InetSocketAddress addr);
+  }
+
+  public interface Type {
+    MessageNeeds.Code type(dev.toad.msg.Type type);
+  }
+
+  public interface Code {
+    Message code(dev.toad.msg.Code code);
+  }
+}