anchor.diff:  
     Typedef(String name, this.returnType, String comment, this.generics,
         this.parameters, this.annotations,
  -      String qualifiedName, bool isPrivate, String owner) 
  -        : super(name, comment, qualifiedName, isPrivate, owner);
  +      String qualifiedName, bool isPrivate, String owner) : super(name, comment,
  +          qualifiedName, isPrivate, owner) {}
   
     Map toMap() => {
       'name': name,
  
positive.code:  * classes, regular classes, typedefs, and errors.
   */
  class ClassGroup {
    Map<String, Class> classes = {};
    Map<String, Typedef> typedefs = {};
    Map<String, Class> errors = {};
  
  
negative.code:   Map<String, Generic> generics;
  
    Class superclass;
  
    /// List of the meta annotations on the class.
    List<String> annotations;
  
    Class(String name, this.superclass, String comment, this.interfaces,
        this.variables, this.methods, this.annotations, this.generics,
        String qualifiedName, bool isPrivate, String owner) : super(name, comment,
            qualifiedName, isPrivate, owner) {}
  
    /**
     * Returns a list of all the parent classes.
  