How can I get the actual details of a string that is masked by the 'ResKey_....' obfuscation?

[TEMPEST.114]

as the title says. 

How, in my script can I convert the ResKey into the final 'object'?
 

e.g. there is a file in the 'mapResource' file that has a key of ResKey_ImageBriefing_325 - and I need the actual name of the file.

 

env.getValueDictByKey - doesn't work

Edited January 22, 2023 by Elphaba