anchor.diff:     */
     PrefixElementImpl.forKernel(LibraryElementImpl enclosingLibrary, this._kernel)
         : _unlinkedImport = null,
  -        super.forSerialized(enclosingLibrary);
  +        super.forKernel(enclosingLibrary);
   
     /**
      * Initialize a newly created prefix element to have the given [name].
  
positive.code:   ClassElementImpl.forKernel(
        CompilationUnitElementImpl enclosingUnit, this._kernel)
        : _unlinkedClass = null,
          super.forSerialized(enclosingUnit);
  
    /**
     * Initialize a newly created class element to have the given [name].
  
negative.code:   FunctionTypeAliasElementImpl.forKernel(
        CompilationUnitElementImpl enclosingUnit, this._kernel)
        : _unlinkedTypedef = null,
          super.forKernel(enclosingUnit);
  
    /**
     * Initialize a newly created type alias element to have the given [name].
  