#fixed code
                              private ApiListType executeRequest(Call call) throws IOException, ApiException {
    return client.handleResponse(call.execute(), listType);
  }
#vulnerable code 
                              private ApiListType executeRequest(Call call)
      throws IOException, ApiException, ObjectMetaReflectException {
    ApiListType data = client.handleResponse(call.execute(), listType);
    V1ListMeta listMetaData = Reflect.listMetadata(data);
    continueToken = listMetaData.getContinue();
    return data;
  } 
                            #location 4 
                            #vulnerability type NULL_DEREFERENCE