system/base.py: future annotations

experiments/simbricks/orchestration/system/base.py

@@ -20,10 +20,10 @@
 # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
+from __future__ import annotations
 import abc
 import itertools
 
-
 class System:
     """Defines System configuration of the whole simulation"""