public virtual OnForeignKeyAnnotationChangedNode VisitOnForeignKeyAnnotationChanged(OnForeignKeyAnnotationChangedNode node)
 => node;
 public override OnForeignKeyAnnotationChangedNode VisitOnForeignKeyAnnotationChanged(OnForeignKeyAnnotationChangedNode node)
 {
     Dispatcher._immediateConventionScope.OnForeignKeyAnnotationChanged(
         node.RelationshipBuilder, node.Name, node.Annotation, node.OldAnnotation);
     return(null);
 }