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{% block field_label %}
  {% if required %}
    {% if attr.class is defined %}
      {% set attr = attr|merge({"class": attr.class ~ " required"}) %}
    {% else %}
      {% set attr = attr|merge({"class": "required"}) %}
    {% endif %}
  {% endif %}
  <label for="{{id}}"{% for v in attr %} {{loop.index}}="{{v}}"{% endfor %}>{{label|trans}}{% if required%} (*){% endif %}</label>
{% endblock %}