More work on nullable references

src/Umbraco.Infrastructure/Persistence/DatabaseModelDefinitions/IndexColumnDefinition.cs

@@ -4,7 +4,7 @@ namespace Umbraco.Cms.Infrastructure.Persistence.DatabaseModelDefinitions
 {
     public class IndexColumnDefinition
     {
-        public virtual string Name { get; set; }
+        public virtual string? Name { get; set; }
         public virtual Direction Direction { get; set; }
     }
 }