<th:block th:if="${resource.display}">
    <th:block th:text="${resource.display}"></th:block>
    <th:block th:if="${resource.system}">
        (Details:
        <th:block th:text="${resource.system}"></th:block>
        <th:block th:if="${resource.code}"
                  th:text="' code ' + ${resource.code} + ' = \'' + ${resource.display} + '\''"></th:block>
        )
    </th:block>
</th:block>
<th:block th:unless="${resource.display}">
    <th:block th:if="${resource.system}">
        (Details:
        <th:block th:text="${resource.system}"></th:block>
        )
    </th:block>
</th:block>