def destination(self):
        """google.cloud.bigquery.table.TableReference: table where results are
        written or :data:`None` if not set.

        The ``destination`` setter accepts:

        - a :class:`~google.cloud.bigquery.table.Table`, or
        - a :class:`~google.cloud.bigquery.table.TableReference`, or
        - a :class:`str` of the fully-qualified table ID in standard SQL
          format. The value must included a project ID, dataset ID, and table
          ID, each separated by ``.``. For example:
          ``your-project.your_dataset.your_table``.

        See
        https://g.co/cloud/bigquery/docs/reference/rest/v2/jobs#configuration.query.destinationTable
        """
        prop = self._get_sub_prop("destinationTable")
        if prop is not None:
            prop = TableReference.from_api_repr(prop)
        return prop