Use file-scoped namespace

src/ExtraLogic/IncrediblyUseless.cs

@@ -1,10 +1,9 @@
-namespace Contoso.Hello.ExtraLogic
+namespace Contoso.Hello.ExtraLogic;
+
+public static class IncrediblyUseless
 {
-    public static class IncrediblyUseless
+    public static string DoNothing(string value)
     {
-        public static string DoNothing(string value)
-        {
-            return value;
-        }
+        return value;
     }
 }

src/Logic/ReallyUseless.cs

@@ -1,12 +1,11 @@
 using Newtonsoft.Json;
 
-namespace Contoso.Hello.Logic
+namespace Contoso.Hello.Logic;
+
+public static class ReallyUseless
 {
-    public static class ReallyUseless
+    public static string SayHi()
     {
-        public static string SayHi()
-        {
-            return JsonConvert.SerializeObject("Hello");
-        }
+        return JsonConvert.SerializeObject("Hello");
     }
 }

src/SuperLogic/EvenMoreUseless.cs

@@ -1,13 +1,12 @@
 using Contoso.Hello.ExtraLogic;
 using Contoso.Hello.Logic;
 
-namespace Contoso.Hello.SuperLogic
+namespace Contoso.Hello.SuperLogic;
+
+public static class EvenMoreUseless
 {
-    public static class EvenMoreUseless
+    public static string DoWork()
     {
-        public static string DoWork()
-        {
-            return IncrediblyUseless.DoNothing($"Some JSON (maybe): {ReallyUseless.SayHi()}");
-        }
+        return IncrediblyUseless.DoNothing($"Some JSON (maybe): {ReallyUseless.SayHi()}");
     }
 }