*
   * <p><b>Performance note:</b> When feasible, {@code initialCapacity} should be the exact number
   * of values that will be added, if that knowledge is readily available. It is better to guess a
   * value slightly too high than slightly too low. If the value is not exact, the {@link
   * ImmutableIntArray} that is built will very likely occupy more memory than strictly necessary;

   *
   * <p><b>Performance note:</b> When feasible, {@code initialCapacity} should be the exact number
   * of values that will be added, if that knowledge is readily available. It is better to guess a
   * value slightly too high than slightly too low. If the value is not exact, the {@link
   * ImmutableLongArray} that is built will very likely occupy more memory than strictly necessary;

   *       to make such changes to our serialized forms, and we have made them before, usually
   *       without trouble. In this case, my guess is that our chosen approach is even less likely
   *       to lead to trouble than an incompatible change would be.
   *   <li>We could make {@link #countMap} no longer be {@code final}. Then we could write to it

# Default permissions for search roles.
role.search.default.permissions=
# Default display permissions for search roles.
role.search.default.display.permissions={role}guest
# Guest permissions for search roles.
role.search.guest.permissions={role}guest

# Prefix for user roles in search.
role.search.user.prefix=1
# Prefix for group roles in search.
role.search.group.prefix=2
# Prefix for role roles in search.

    /** Number of milliseconds in one day. */
    public static final long ONE_DAY_IN_MILLIS = 24L * 60L * 60L * 1000L;

    /** Guest user identifier. */
    public static final String GUEST_USER = "guest";

    /** Conversion rule array for pager components. */
    public static final String[] PAGER_CONVERSION_RULE =

    /** The key of the configuration. e.g. {role}guest */
    String ROLE_SEARCH_DEFAULT_DISPLAY_PERMISSIONS = "role.search.default.display.permissions";

    /** The key of the configuration. e.g. {role}guest */
    String ROLE_SEARCH_GUEST_PERMISSIONS = "role.search.guest.permissions";

    /** The key of the configuration. e.g. 1 */

                logger.warn("Failed to process shutdown task.", e);
            }
        });
    }

    /**
     * Gets the username of the current user.
     *
     * @return The username, or "guest" if not logged in.
     */
    public String getUsername() {
        return getRequestManager().findUserBean(FessUserBean.class).map(FessUserBean::getUserId).orElse(Constants.GUEST_USER);
    }

    /**