Code sample- Document "First Steps in Variant Management (Doc ID 1311724.1)" in Oracle support site

Hi

I am trying to access the code samples for Variant Management listed in the document below:

First Steps in Variant Management (Doc ID 1311724.1)

I am trying to access the code samples on OTN mentioned in the last section of above document.

This is the section of the above document I am talking about:

How to include custom validation during the creation of the Instance

This section relates to customizing and is not a required step!

The standard validation and instantiation can be enhanced by process extensions (PXs) and Event scripts.
Per default, Models are replaced by objects of the standard part subclass type with their associated autonumbers. Users can override this by using custom Process Extensions or Groovy scripts linked to the event 'Derive Variant Model Option BOM.'  This would allow for different Model Classes to be replaced by different Part Classes.