{%- set icon = iconIdentifier ? icons[iconIdentifier] : null -%}
{%- set iconOverlay = iconOverlayIdentifier ? icons[iconOverlayIdentifier] : null -%}
{%- set iconSize = iconSize ?? 'auto' -%}
{%- set iconSpinning = iconSpinning ?? false -%}
{% if icon %}
<span class="icon icon-size-{{ iconSize }} icon-state-default{% if iconSpinning %} icon-spin{% endif %}">
    <span class="icon-markup">
        {% include '_symbol.html.twig' with { icon: icon } %}
    </span>
{% if iconOverlay %}    <span class="icon-overlay">
        {% include '_symbol.html.twig' with { icon: iconOverlay } %}
    </span>
{% endif %}
</span>
{% endif %}