* @return OptionalEntity containing the created synonym item or empty if creation failed
     */
    protected OptionalEntity<SynonymItem> createSynonymItem(final CreateForm form, final VaErrorHook hook) {
        try {
            return createSynonymItem(this, form, hook);
        } catch (final ValidationErrorException e) {
            saveToken();
            throw e;
        }
    }

    /**