code: private Collection<SagaInstanceInfo> continueExistingSaga(final SagaType sagaType, final Object instanceKey) {
          Collection<SagaInstanceInfo> sagas = new ArrayList<>();
  
          Collection<? extends SagaState> sagaStates = stateStorage.load(sagaType.getSagaClass().getName(), instanceKey);
          for (SagaState sagaState : sagaStates) {
              try {
                  Saga saga = instanceFactory.continueExisting(sagaType.getSagaClass(), sagaState);
                  sagas.add(SagaInstanceInfo.define(saga, false));
              } catch (ExecutionException e) {
                  Throwables.propagate(e);
              }
          }
  
          return sagas;
      }
docs: Create a new saga instance with already existing saga state.