private void collectPropertiesVariants(final List<Object> result, Set<String> variants) {
    if (myProjectDom != null) {
      for (XmlTag xmlTag : MavenDomProjectProcessorUtils.collectProperties(myProjectDom, myProject)) {
        String propertyName = xmlTag.getName();
        if (variants.add(propertyName)) {
          result.add(createLookupElement(xmlTag, propertyName, PlatformIcons.PROPERTY_ICON));
        }
      }
    }
  }
private void collectPropertiesVariants(final List<Object> result, Set<String> variants)