def METHOD_NAME(self) -> None:
    self.dashboard_last_modified = DashboardLastModifiedTimestamp(
        last_modified_timestamp=123456789,
        cluster='cluster_id',
        product='product_id',
        dashboard_id='dashboard_id',
        dashboard_group_id='dashboard_group_id'
    )
    self.expected_ts_key = 'product_id_dashboard://cluster_id.dashboard_group_id/dashboard_id/' \
                           '_last_modified_timestamp'
    self.expected_dashboard_key = 'product_id_dashboard://cluster_id.dashboard_group_id/dashboard_id'