code: function globCaches(pathsArray) {
      let deepIndex = [];
      let mergedIndex;
      // checking that previousCacheDir content is an array
      if (!Array.isArray(pathsArray)) {
          logger_1.logger.log('warn', 'previousCacheDir variable from config file is not an Array');
          throw 'stop execution';
      }
      //checking if pathsArray contains some empty string. If yes, we do not considerate them.
      if (pathsArray.includes('')) {
          let indexToRemove = pathsArray.map((e, i) => e === "" ? i : '').filter(String);
          pathsArray = pathsArray.filter(function (element) { return element !== ''; });
      }
      // finding pattern of jobID.json inside cache path
      for (let element in pathsArray) {
          deepIndex.push(glob.sync(pathsArray[element] + "/**/jobID\.json", { follow: true }));
          logger_1.logger.log('debug', `${deepIndex[element].length} jobID.json file(s) found in directory ${pathsArray[element]}`);
      }
      // merged array of array into simple array of all path that contain a jobID.json file
      mergedIndex = [].concat.apply([], deepIndex);
      logger_1.logger.log('debug', `list of all jobID.json file(s) found \n ${JSON.stringify(mergedIndex)} \n`);
      return mergedIndex;
  }
docs: /*
  Function that manage the indexing of an array of caches path directory
  @pathsArray: array of strings which contain cache directory paths.
  #deepIndex : result of glob package (array of array).
  #mergedIndex : transforminf array of array into a simple array.