This routine is available starting with Power Scripts™ 4.0.0 (server).
Retrieves a structure containing information about a version that has been merged or deleted.
A JVersion value containing the component data.
logPrint("INFO", "Result of listener: " + getMergeToVersionFromEvent());
The result is a structure containing version id, name, description; project key of the version, start and release dates, and if the version is archieved or released.