public static boolean isHtml5Context(XmlElement context) {
    XmlDocument doc = PsiTreeUtil.getParentOfType(context, XmlDocument.class);
    if (doc == null && context != null) {
      return Html5SchemaProvider.getHtml5SchemaLocation()
        .equals(ExternalResourceManagerEx.getInstanceEx().getDefaultHtmlDoctype(context.getProject()));
    }
    return isHtml5Document(doc);
  }
public static boolean isHtml5Context(XmlElement context)