code: function removeCachedFiles(params, cb) {
    //Cleaning Up Any Files Cached To Render The Submission.
    logger.debug("cacheFiles: mergeSubmissionFiles Removing Cached Files For PDF Generation: ", params.submissionFiles);
    async.eachSeries(params.submissionFiles || [], function(submissionFileDetails, cb) {
      logger.debug("Removing Cached File: ", submissionFileDetails);
      fs.unlink(submissionFileDetails.url, function(err) {
        if (err) {
          logger.error('Error Removing File At' + submissionFileDetails.url);
        }
  
        return cb();
      });
    }, cb);
  }
docs: Removing Any Cached Files Needed For Rendering The PDF
  @param params
  @param cb
  @private