{% macro headerLinePrototype(field) %}
    {% spaceless %}
        <tr>
            <td>
                {{ form_widget(field.key, {'attr': {'class': 'form-control'} }) }}
                {{ form_errors(field.key) }}
            </td>
            <td>
                {{ form_widget(field.value, {'attr': {'class': 'form-control'} }) }}
                {{ form_errors(field.value) }}
            </td>
            <td>
                <a href="#" class="btn btn-sm btn-danger delete_header_link" title="{{ 'lexik_mailer.edit.action_delete' | trans({}, 'LexikMailerBundle') }}">
                    {{ 'lexik_mailer.edit.action_delete' | trans({}, 'LexikMailerBundle') }}
                </a>
            </td>
        </tr>
    {% endspaceless %}
{% endmacro %}