anchor.diff:  
     public void delete( final Object id, final String typeName )
     {
  -    <% data_module.entities.each do |entity|
  +    <% data_module.entities.select{|entity| !entity.abstract?}.each do |entity|
   %>if( <%= entity.imit.imitation_name %>.TYPE_KEY.equals( typeName ) )
       {
         delete<%= entity.name %>( id );
  
positive.code:   public void create( final Object id, final String typeName, final org.json.JSONObject object )
        throws org.json.JSONException
    {
      <% data_module.entities.each do |entity|
  %>if( <%= entity.imit.imitation_name %>.TYPE_KEY.equals( typeName ) )
      {
        create<%= entity.name %>( id, object );
  
negative.code:   }
  
  <% data_module.entities.each do |entity| %>
  <% if !entity.abstract? %>
    void create<%= entity.name %>( final Object id, final org.json.JSONObject object )
        throws org.json.JSONException
    {
  