docs: private static Map<CharSequence, Object> getInitialIdToObjectMap(final Object objectInstance,
              final Object parsedJSON) {
          final Map<CharSequence, Object> idToObjectInstance = new HashMap<>();
          if (parsedJSON instanceof JSONObject) {
              final JSONObject itemJsonObject = (JSONObject) parsedJSON;
              if (!itemJsonObject.items.isEmpty()) {
                  final Entry<String, Object> firstItem = itemJsonObject.items.get(0);
                  if (firstItem.getKey().equals(JSONUtils.ID_KEY)) {
                      final Object firstItemValue = firstItem.getValue();
                      if (firstItemValue == null || !CharSequence.class.isAssignableFrom(firstItemValue.getClass())) {
                          idToObjectInstance.put((CharSequence) firstItemValue, objectInstance);
                      }
                  }
              }
          }
          return idToObjectInstance;
      }