docs: public ObjectMetadata getObject(GetObjectRequest request, File destinationFile) {
          checkNotNull(request, "request should not be null.");
          checkNotNull(destinationFile, "destinationFile should not be null.");
  
          BosObject bosObject = this.getObject(request);
          this.downloadObjectToFile(bosObject, destinationFile, request.getRange() == null);
          return bosObject.getObjectMetadata();
      }