cdm/src/main/java/ucar/util/prefs/PreferencesExt.java
protected String[] childrenNamesSpi() {
      HashSet allKids = new HashSet(children.keySet());
      PreferencesExt sd = getStoredDefaults();
      if (sd != null)
        allKids.addAll(  sd.childrenNamesSpi(absolutePath()));

      ArrayList list = new ArrayList( allKids);
      Collections.sort(list);
      String result[] = new String[list.size()];
      for (int i=0; i<list.size(); i++)
        result[i] = list.get(i).toString();
      return result;
    }
protected String[] childrenNamesSpi() {
      HashSet allKids = new HashSet(children.keySet());
      PreferencesExt sd = getStoredDefaults();
      if (sd != null)
        allKids.addAll(  sd.childrenNamesSpi(absolutePath()));

      ArrayList list = new ArrayList( allKids);
      Collections.sort(list);
      String result[] = new String[list.size()];
      for (int i=0; i<list.size(); i++)
        result[i] = list.get(i).toString();
      return result;
    }
Implements <tt>AbstractPreferences</tt> <tt>childrenNamesSpi()</tt> method.
Find all children nodes of this node (or of identically named nodes in
storedDefaults)