}
        } catch (final Exception e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to list objects in {}", bucket, e);
            }
        }

        items.addAll(fileItems);
        return items;
    }

    @Override
    public Map<String, String> getObjectTags(final String objectName) {
        try {

            if (logger.isDebugEnabled()) {
                logger.debug("Failed to access storage endpoint: {}", fessConfig.getStorageEndpoint(), e);
            }
        }

        list.addAll(fileList);
        return list;
    }

    /**
     * Extracts the file name from a full object path.
     *
     * @param objectName the full object path
     * @return the file name portion of the path

        final List<String> defaultGroups = getDefaultGroupList();
        final List<String> defaultRoles = getDefaultRoleList();
        groupList.addAll(defaultGroups);
        roleList.addAll(defaultRoles);

        if (logger.isDebugEnabled()) {
            logger.debug("[updateMemberOf] Default groups: {}, Default roles: {}", defaultGroups, defaultRoles);
        }