https://community.bistudio.com/wiki/getVariable
varspace getVariable [name, defaultValue]
https://community.bistudio.com/wiki/getOrDefault
hashMap getOrDefault [key, defaultValue, setDefault]
getVariable and getOrDefault are very similiar in Function, but getVariable is lacking a "setDefault" Parameter, which would be very nice to have.
> setDefault: Boolean - (Optional, default false) if set to true and value does not exist in provided hash map, defaultValue will be added to the hash map