* factory method to construct instances can have their instance methods checked. For example:
 *
 * <pre>
 * public class Address {
 *   private final String city;
 *   private final String state;
 *   private final String zipcode;
 *
 *   public Address(String city, String state, String zipcode) {...}
 *
 *   {@literal @Override} public boolean equals(Object obj) {...}
 *   {@literal @Override} public int hashCode() {...}
 *   ...

            result.setBusinessCategory(DfTypeUtil.toString(source.get("businessCategory")));
            result.setCarLicense(DfTypeUtil.toString(source.get("carLicense")));
            result.setCity(DfTypeUtil.toString(source.get("city")));
            result.setDepartmentNumber(DfTypeUtil.toString(source.get("departmentNumber")));
            result.setDescription(DfTypeUtil.toString(source.get("description")));

    /** The key of the configuration. e.g. postalAddress */
    String LDAP_ATTR_POSTAL_ADDRESS = "ldap.attr.postalAddress";

    /** The key of the configuration. e.g. l */
    String LDAP_ATTR_CITY = "ldap.attr.city";

    /** The key of the configuration. e.g. teletexTerminalIdentifier */
    String LDAP_ATTR_TELETEX_TERMINAL_IDENTIFIER = "ldap.attr.teletexTerminalIdentifier";

    public static final String LABELS_POSTAL_ADDRESS = "{labels.postalAddress}";

    /** The key of the message: City */
    public static final String LABELS_user_city = "{labels.user_city}";

    /** The key of the message: City */
    public static final String LABELS_CITY = "{labels.city}";

    /** The key of the message: Teletex Terminal Identifier */