private static List<XmlTag> getTags(List<CommonProblemDescriptor> descriptors) {
    List<XmlTag> tags = new ArrayList<>();
    for (CommonProblemDescriptor d : descriptors) {
      if (d instanceof ProblemDescriptor) {
        PsiElement e = ((ProblemDescriptor)d).getPsiElement();
        if (e instanceof XmlTag) {
          tags.add((XmlTag)e);
        }
        else if (e instanceof XmlAttributeValue) {
          PsiElement parent = e.getParent();
          if (parent instanceof XmlAttribute) {
            ContainerUtil.addIfNotNull(tags, ((XmlAttribute)parent).getParent());
          }
        }
      }
    }
    return tags;
  }
private static List<XmlTag> getTags(List<CommonProblemDescriptor> descriptors)