# installed straberry perl
perl -MFile::HomeDir -E "say +File::HomeDir->my_documents(); say $File::HomeDir::IMPLEMENTED_BY"

C:\Users\NAME\Document
File::HomeDir::Windows

# portable straberry perl
perl -MFile::HomeDir -E "say +File::HomeDir->my_documents(); say $File::HomeDir::IMPLEMENTED_BY"

                        # <--- NO OUTPUT aka undef!
Portable::HomeDir