A Revenue Cloud Consultant wants to inherit all the standard components of the standard context...

A Revenue Cloud Consultant wants to inherit all the standard components of the standard context SalesTransactionContext, such as nodes, attributes, and mappings from a standard context definition, and customize the definition by adding new components.

The consultant also wants to ensure that they can easily obtain the upgraded standard components as needed, based on the latest version, without losing any of the customization* that were made.

What should the consultant do to achieve this?