Consider renaming all isValidXYZFeature to checkValidXYZFeature within psa token library #42
Description
This issue is a twin issue to the original issue reported in ccatoken repository:
Basically, if the Claim checker functions are named isValidXYZFeature then they should return a boolean.
Otherwise, they should be renamed as checkValidXYZFeature() which would return an error in case any checks fail!