// ===================================================================================
    //                                                                           Attribute
    //                                                                           =========
    protected final FessConfig fessConfig;

    // ===================================================================================

         * return null; }
         */
    }

    /**
     * Gets the reading from the attribute.
     * @param stream The token stream.
     * @return The reading from the attribute.
     */
    protected String getReadingFromAttribute(final TokenStream stream) {
        return null;
        /*

   *
   * <p><b>Note:</b> Double and single quotes are not escaped, so it is <b>not safe</b> to use this
   * escaper to escape attribute values. Use {@link #xmlContentEscaper} if the output can appear in
   * element content or {@link #xmlAttributeEscaper} in attribute values.
   *
   * <p>This escaper substitutes {@code 0xFFFD} for non-whitespace control characters and the

    //                                                                           Attribute
    //                                                                           =========

    // ===================================================================================
    //                                                                           Attribute
    //                                                                           =========

    //                                                                           Attribute
    //                                                                           =========

    // ===================================================================================
    //                                                                           Attribute
    //                                                                           =========

And these models are all sharing a lot of the data and duplicating attribute names and types.

We could do better.

We can declare a `UserBase` model that serves as a base for our other models. And then we can make subclasses of that model that inherit its attributes (type declarations, validation, etc).

All the data conversion, validation, documentation, etc. will still work as normally.

    //

    // ===================================================================================
    //                                                                           Attribute
    //

    // ===================================================================================
    //                                                                      Search Execute

                }
            }
        }
        return null;
    }

    /**
     * Gets an attribute value as an integer.
     *
     * @param attributes the named node map of attributes
     * @param name the attribute name
     * @return the attribute value as Integer, null if not found or not parseable
     */

     * Defines the search filter used to locate groups in LDAP.
     */
    @Size(max = 1000)
    public String ldapGroupFilter;

    /**
     * LDAP attribute name for group membership.
     * Specifies which LDAP attribute contains group membership information.
     */
    @Size(max = 100)
    public String ldapMemberofAttribute;

    /**
     * Notification message displayed on the login page.

    //

    // ===================================================================================
    //                                                                           Attribute
    //

    // ===================================================================================
    //                                                                      Search Execute