i18n applyLocalizedBuilder

registry.registerChatInputCommand((builder) =>
  applyLocalizedBuilder(builder, LanguageKey.Name, LanguageKey.Description) //
    .setIntegrationTypes(integrationTypes)
    .setContexts(contexts)
    .addUserOption((option) =>
      applyLocalizedBuilder(
        option,
        "commands/level:userOptionName",
        "commands/level:userOptionDescription",
      ) //
        .setRequired(false),
    ),
);

{
  "name": "level",
  "description": "Displays the level and experience points (XP).",
  "userOptionName": "username",
  "userOptionDescription": "The user whose level and XP should be displayed.",
  "noXP": "You don't have any XP yet!",
  "status": "You are level {{level}} with {{current}}/{{needed}} XP."
}