private PsiElement setNewName(String newText) {
        if (myPosition instanceof XmlTag) {
          return ((XmlTag)myPosition).setName(newText);
        }
        else {
          final XmlElementFactory xmlElementFactory = XmlElementFactory.getInstance(myPosition.getProject());
          final XmlAttribute xmlAttribute = xmlElementFactory.createXmlAttribute("attributeName", newText);
          final XmlAttributeValue valueElement = xmlAttribute.getValueElement();
          assert valueElement != null;
          return myPosition.replace(valueElement);
        }
      }
private PsiElement setNewName(String newText)