code: @Override
      public GetSignedUrlTaskResult getSignedUrl(String spaceId,
                                                 String contentId,
                                                 String resourcePrefix)
          throws ContentStoreException {
          int defaultExpire = GetSignedUrlTaskParameters.USE_DEFAULT_MINUTES_TO_EXPIRE;
          return getSignedUrl(spaceId, contentId, resourcePrefix, defaultExpire, null);
      }
docs: {@inheritDoc}