public virtual OnEntityTypeAnnotationChangedNode VisitOnEntityTypeAnnotationChanged(OnEntityTypeAnnotationChangedNode node) =>
 node;
 public override OnEntityTypeAnnotationChangedNode VisitOnEntityTypeAnnotationChanged(OnEntityTypeAnnotationChangedNode node)
 {
     Dispatcher._immediateConventionScope.OnEntityTypeAnnotationChanged(
         node.EntityTypeBuilder, node.Name, node.Annotation, node.OldAnnotation);
     return(null);
 }