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