private void updateMap(@NotNull final XmlAttribute attribute, @NotNull final XmlAttributeValue value, final boolean soft) {
      final String id = XmlHighlightVisitor.getUnquotedValue(value, attribute.getParent());
      if (XmlUtil.isSimpleValue(id, value) &&
          PsiTreeUtil.getChildOfType(value, OuterLanguageElement.class) == null) {
        myHolder.registerId(id, value, soft);
      }
    }
private void updateMap(@NotNull final XmlAttribute attribute, @NotNull final XmlAttributeValue value, final boolean soft)