code: private List<String> getChildrenList() {
          if (childrenList != null) return childrenList;
  
          SharedPreferences prefs = loadSharedPreferences("children");
  
          String list = prefs.getString(getId(), null);
  
          childrenList = (list == null) ? new ArrayList<String>() : new ArrayList<>(Arrays.asList(list.split(",")));
          return childrenList;
      }
docs: Get a list of child objects ids.
  
  @throws com.mauriciogiordano.easydb.exception.NoContextFoundException in case of null..
  context.
  @return List of all children.