anchor.diff:  
     /**
      * Parameters of the executable, if any.  Note that getters have no
  -   * parameters, and setters have a single parameter.
  +   * parameters (hence this will be the empty list), and setters have a single
  +   * parameter.
      */
     List<UnlinkedParam> parameters;
   
  
positive.code:  */
  class UnlinkedImport {
    /**
     * Relative URI used to reference the imported library.
     */
    String uri;
  
  
negative.code:   List<UnlinkedTypeParam> typeParameters;
  
    /**
     * Supertype of the class, or `null` if either (a) the class doesn't
     * explicitly declare a supertype (and hence has supertype `Object`), or (b)
     * the class *is* `Object` (and hence has no supertype).
     */
    UnlinkedTypeRef supertype;
  
  