Manipulate commands for PageReferenceEditorDescriptor

For CollectionEditorDescriptor there exist a collection of available commands that we can manipulate

 public class ContactPersonCollectionEditorDescriptor : CollectionEditorDescriptor<ContactPerson>

 {

     public override void ModifyMetadata(ExtendedMetadata metadata, IEnumerable<Attribute> attributes)

     {

         GridDefinition.Commands -= CollectionEditorCommands.Edit;



         base.ModifyMetadata(metadata, attributes);

     }

 }

I would like to have this for PageReferenceEditorDescriptor asweel, but can not find this option.

My customer do not want the "Edit" option available, because they find it confusion.