with
Extends the given PRODID with the user agents (typically calendar app name and version). This way the PRODID does not only identify the app that actually produces the iCalendar, but also the used front-end app, which may be helpful when debugging the iCalendar.
Return
original PRODID with user agents in parentheses
Parameters
user
list of involved user agents (preferably in package name/version format, for instance com.example.mycalendar/1.0)