anchor.diff:  const DefaultUri = '127.0.0.1:8080';
   
   class Author extends PersistentObject  {
  -  String get type => 'Author';
  +  String get dbType => 'Author';
     String get name() => getProperty('name');
     set name(String value) => setProperty('name',value);
     
  
positive.code: }
  
  class Comment extends EmbeddedPersistentObject {
    String get type => 'Comment';
    
    User get user => getLinkedObject('user');
    set user (User value) => setLinkedObject('user',value);
  
negative.code: }
  
  class Article extends PersistentObject {
    String get dbType => 'Article';
    
    String get title() => getProperty('title');
    set title(String value) => setProperty('title',value);
  