while (aProps.containsKey(aIndex+"."+KEY_NAME)) {
String aPrefix = aIndex+".";
Map<String, String> aUnit = new HashMap<String, String>();
for (Object aOrigKey : Collections2.filter(aProps.keySet(), new PrefixPredicate(aPrefix))) {
String aKey = aOrigKey.toString();
aKey = aKey.substring(aPrefix.length());
aUnit.put(aKey, aProps.getProperty(aOrigKey.toString()));