code: function getQueueEntry(zipfile) {
      return function queueEntry(entry) {
        queue.push({
          zipfile: zipfile,
          workingDir: params.workingDir,
          entry: entry
        }, function(err) {
          if (err) {
            logger.debug("Error unzipping file params.zipFilePath", err);
            //If one of the files has failed to unzip correctly. No point in continuing to unzip. Close the zip file.
            zipfile.close();
          }
        });
      };
    }
docs: Pushing a single file unzip to the queue.