public virtual OnForeignKeyPropertiesChangedNode VisitOnForeignKeyPropertiesChanged(OnForeignKeyPropertiesChangedNode node) =>
 node;
 public override OnForeignKeyPropertiesChangedNode VisitOnForeignKeyPropertiesChanged(OnForeignKeyPropertiesChangedNode node)
 {
     Dispatcher._immediateConventionScope.OnForeignKeyPropertiesChanged(
         node.RelationshipBuilder, node.OldDependentProperties, node.OldPrincipalKey);
     return(null);
 }