docs: def dumps(self):
          """Create a dump of the metadata associated to the record."""
          self.data.update({
              'bucket': str(self.obj.bucket_id),
              'checksum': self.obj.file.checksum,
              'key': self.obj.key,  # IMPORTANT it must stay here!
              'size': self.obj.file.size,
              'version_id': str(self.obj.version_id),
          })
          return self.data