docs: def send_object(bucket, obj, expected_chksum=None,
                      logger_data=None, restricted=True, as_attachment=False):
          """Send an object for a given bucket.
  
          :param bucket: The bucket (instance or id) to get the object from.
          :param obj: A :class:`invenio_files_rest.models.ObjectVersion`
              instance.
          :params expected_chksum: Expected checksum.
          :param logger_data: The python logger.
          :param kwargs: Keyword arguments passed to ``Object.send_file()``
          :returns: A Flask response.
          """
          if not obj.is_head:
              check_permission(
                  current_permission_factory(obj, 'object-read-version'),
                  hidden=False
              )
  
          if expected_chksum and obj.file.checksum != expected_chksum:
              current_app.logger.warning(
                  'File checksum mismatch detected.', extra=logger_data)
  
          file_downloaded.send(current_app._get_current_object(), obj=obj)
          return obj.send_file(restricted=restricted,
                               as_attachment=as_attachment)