def METHOD_NAME(node):
    log('')
    log('bs->filename: ' + node['image']['filename'],
        filters=[filter_testfiles, filter_imgfmt])
    log('bs->backing_file: ' + node['image']['full-backing-filename'],
        filters=[filter_testfiles, filter_imgfmt])
    if 'backing-image' in node['image']:
        log('bs->backing->bs->filename: ' +
            node['image']['backing-image']['filename'],
            filters=[filter_testfiles, filter_imgfmt])
    else:
        log('bs->backing: (none)')
    log('')