}

    //
    // fess_*.properties
    //

    String getAuthenticationAdminRoles();

    default String[] getAuthenticationAdminRolesAsArray() {
        String[] roles = (String[]) propMap.get(AUTHENTICATION_ADMIN_ROLES);
        if (roles == null) {
            roles = getAuthenticationAdminRoles().split(",");
            propMap.put(AUTHENTICATION_ADMIN_ROLES, roles);
        }