✅ Source Generator, dynamic assembly not added.

            var assemblyName = new AssemblyName("MyAssembly");
            var assemblyBuilder = AssemblyBuilder.DefineDynamicAssembly(assemblyName, AssemblyBuilderAccess.Run);
            var moduleBuilder = assemblyBuilder.DefineDynamicModule("MyModule");

            var typeBuilder = moduleBuilder.DefineType("MyNamespace.MyType", TypeAttributes.Public);
            var methodBuilder = typeBuilder.DefineMethod("MyMethod", MethodAttributes.Public | MethodAttributes.Static);
            var ilGenerator = methodBuilder.GetILGenerator();

            // Generate some IL code
            ilGenerator.Emit(OpCodes.Ldstr, "Hello, world!");
            ilGenerator.Emit(OpCodes.Call, typeof(Console).GetMethod("WriteLine", new[] { typeof(string) }));
            ilGenerator.Emit(OpCodes.Ret);

            typeBuilder.CreateTypeInfo();
            var sourceText = "namespace MyNamespace { public static class MyClass { public static void MyMethod() { MyType.MyMethod(); } } }";
            context.AddSource("MyFile.cs", sourceText);