def METHOD_NAME(image_obj):
    '''Given the image object, return a unique SPDX document uri.
    This is a combination of the tool name and version, the image name
    and the uuid'''
    return json_formats.document_namespace.format(
        version=get_git_rev_or_version()[1], image=image_obj.name,
        uuid=spdx_common.get_uuid())