anchor.diff:  <% if entity.extends.nil? %>
     protected final boolean isCreated()
     {
  -    return _created;
  +    return _$created;
     }
   
     @java.lang.Override
  
positive.code:   protected final void checkLinked()
    {
      checkValidity();
      if( !_linked )
      {
        throw new IllegalStateException( "Method invoked on unlinked imitation of type <%= entity.imit.name %>" );
      }
  
negative.code: 
    protected void performLink()
    {
      <%= entity.extends.nil? ? "if( !_$linking ) throw new IllegalStateException( \"performLink invoked from outside link\" )" : "super.performLink()" %>;
  <% linkable_attributes.each do |attribute|
  %>      link<%= attribute.imit.name %>();
  <% end %>
  