Accessing a document from a bonita application page without starting the process

Is there any way to access a static document attached to a certain process from a bonita application page without having to start the process?

I have tried to use the BPM API but they only work when a case has been started or archived.

../API/bpm/caseDocument?f=name=userManual
../API/bpm/archivedCaseDocument?f=name=userManual