This class can be used to provide an interface for specifying internationalized text strings saved in message keys via input from a form. When editing the content provided via the input field is saved together with an item-specific message keys in the message key tables via lang::util::convert_to_i18n.
This formfield class is especially useful for xowiki items which have no language-prefix (e.g. folders or links). In other cases it is probably still a better idea to create same named pages with different language prefixes.
Disable any conversion on the _name property (:name Page instance variable): this property is special and receives already its necessary conversion at validation time, happening before conversion time and should not be overridden