The driver supports entitlements for linkable templates and sub-templates in Epic. This is accomplished by exporting, from Epic, the linkable templates and sub-templates to a CSV file. For more information, see How the Driver Works.
When a code map refresh is issued by the driver the resulting query for linkable templates and sub-templates is routed by the driver shim through the commons-csv-1.8.jar where the previously exported templates.csv file is read, and the response is returned to IDM with the entitlement values.