/**
  * Put nv list.
  *
  * @param filename the filename
  * @param containerName the container name
  * @param optionContainer the option container
  * @param outList the out list
  * @throws Exception the exception
  */
 public static void putNVList(
     String filename, String containerName, Element optionContainer, List<NameValue> outList)
     throws Exception {
   NodeList childElements = DomParseUtil.getImmediateChildrenByTagName(optionContainer, "option");
   if (childElements == null) {
     return;
   }
   for (int i = 0; i < childElements.getLength(); i++) {
     Element option = (Element) childElements.item(i);
     String name = option.getAttribute("name");
     if (name == null || name.length() == 0) {
       throwError(filename, "Missing option name in option list: '" + containerName + "'");
     }
     String value = DomParseUtil.getText(option);
     if (value == null) {
       throwError(filename, "Missing option value for option list: '" + containerName + "'");
     }
     NameValue nv = new NameValue();
     nv.setName(name);
     nv.setValue(value);
     outList.add(nv);
   }
 }