code: @Override
      public String getAttempts(String projectId, String eventCollection) throws IOException {
          File projectDir = getProjectDir(projectId, false);
          File collectionDir = new File(projectDir, eventCollection);
          File attemptsFile = new File(collectionDir, ATTEMPTS_JSON_FILE_NAME);
          return get(attemptsFile);
      }
docs: {@inheritDoc}