@Override
    protected boolean isEnabledAt(XmlFile xmlFile, int offset) {
        final PsiElement element = xmlFile.findElementAt(offset);
        if (!(element instanceof XmlElement || element instanceof PsiWhiteSpace)) {
            return false;
        }

        final PsiElement node = XPathExpressionGenerator.transformToValidShowPathNode(element);
        return node != null;
    }
@Override
    protected boolean isEnabledAt(XmlFile xmlFile, int offset)