def METHOD_NAME():
    """Get a list of project caches stored under collaboration cache"""
    collab_root = op.normpath(op.expandvars(
        COLLAB_CACHE_PATH_FORMAT.format(version=HOST_APP.version)
    ))
    mlogger.debug('cache root: %s', collab_root)
    collab_caches = []
    if op.exists(collab_root):
        for cache_root in os.listdir(collab_root):
            cache_root_path = op.join(collab_root, cache_root)
            for cache_inst in os.listdir(cache_root_path):
                cache_inst_path = op.join(cache_root_path, cache_inst)
                mlogger.debug('cache inst: %s', cache_inst_path)
                if op.isdir(cache_inst_path):
                    collab_caches.append(
                        CollabCache(cache_inst_path)
                        )
    return collab_caches