{% macro checkForId(ns, id) %}
  {% if id is not defined %}
    <div class="error-noid">
      A <strong>unique ID property</strong> must be defined for this component.<br>
      namespace: <i>{{ns}}</i><br>
    </div>
  {% endif %}
{% endmacro %}

{% macro gatherCssClasses(ns, modifier, additionalClasses) %}
 {% spaceless %}
    {% set cssClasses = '' %}

    {% if modifier is defined %}
        {% set cssClasses = cssClasses ~ ' ' ~ ns ~ '--' ~ modifier %}
    {% endif %}

    {% if additionalClasses is defined %}
        {% set cssClasses = cssClasses ~ ' ' ~ additionalClasses %}
    {% endif %}
    {{ cssClasses }}
{% endspaceless %}
{% endmacro %}