getNewPath(storagePath, name) {
    if (!_.isString(name)) {
      name = this.fileObj.name;
    }
    const ret = path.join(storagePath, this.fileObj._id + "-" + this.versionName + "-" + name);
    return ret;
  }
returns the new file path
@param storagePath use this storage path
@return the new file path