src/main/java/com/googlecode/fascinator/harvester/workflow/WorkflowHarvester.java
@Override
    public Set<String> getObjectId(File uploadedFile) throws HarvesterException {
        Set<String> objectIds = new HashSet<String>();
        try {
            objectIds.add(createDigitalObject(uploadedFile));
        } catch (StorageException se) {
            throw new HarvesterException(se);
        }
        return objectIds;
    }
@Override
    public Set<String> getObjectId(File uploadedFile) throws HarvesterException {
        Set<String> objectIds = new HashSet<String>();
        try {
            objectIds.add(createDigitalObject(uploadedFile));
        } catch (StorageException se) {
            throw new HarvesterException(se);
        }
        return objectIds;
    }
Get an individual uploaded file as a digital object. For consistency this
should be in a list.

@return a list of one object ID
@throws HarvesterException if there was an error retrieving the objects