declare namespace javax {
    namespace security {
        namespace auth {
            namespace callback {
                /**
                 * <p> Implementations of this interface are passed to a
                 * {@code CallbackHandler}, allowing underlying security services
                 * the ability to interact with a calling application to retrieve specific
                 * authentication data such as usernames and passwords, or to display
                 * certain information, such as error and warning messages.
                 * <p> {@code Callback} implementations do not retrieve or
                 * display the information requested by underlying security services.
                 * {@code Callback} implementations simply provide the means
                 * to pass such requests to applications, and for applications,
                 * if appropriate, to return requested information back to the
                 * underlying security services.
                 * @see javax.security.auth.callback.CallbackHandler
                 * @see javax.security.auth.callback.ChoiceCallback
                 * @see javax.security.auth.callback.ConfirmationCallback
                 * @see javax.security.auth.callback.LanguageCallback
                 * @see javax.security.auth.callback.NameCallback
                 * @see javax.security.auth.callback.PasswordCallback
                 * @see javax.security.auth.callback.TextInputCallback
                 * @see javax.security.auth.callback.TextOutputCallback
                 */
                // @ts-ignore
                interface Callback {
                }
            }
        }
    }
}