src/main/java/com/uber/cadence/internal/replay/ActivityDecisionStateMachine.java [52:79]:
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      default:
        return null;
    }
  }

  @Override
  public void handleDecisionTaskStartedEvent() {
    switch (state) {
      case CANCELED_AFTER_INITIATED:
        stateHistory.add("handleDecisionTaskStartedEvent");
        state = DecisionState.CANCELLATION_DECISION_SENT;
        stateHistory.add(state.toString());
        break;
      default:
        super.handleDecisionTaskStartedEvent();
    }
  }

  @Override
  public void handleCancellationFailureEvent(HistoryEvent event) {
    switch (state) {
      case CANCELLATION_DECISION_SENT:
        stateHistory.add("handleCancellationFailureEvent");
        state = DecisionState.INITIATED;
        stateHistory.add(state.toString());
        break;
      default:
        super.handleCancellationFailureEvent(event);
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src/main/java/com/uber/cadence/internal/replay/TimerDecisionStateMachine.java [58:85]:
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      default:
        return null;
    }
  }

  @Override
  public void handleDecisionTaskStartedEvent() {
    switch (state) {
      case CANCELED_AFTER_INITIATED:
        stateHistory.add("handleDecisionTaskStartedEvent");
        state = DecisionState.CANCELLATION_DECISION_SENT;
        stateHistory.add(state.toString());
        break;
      default:
        super.handleDecisionTaskStartedEvent();
    }
  }

  @Override
  public void handleCancellationFailureEvent(HistoryEvent event) {
    switch (state) {
      case CANCELLATION_DECISION_SENT:
        stateHistory.add("handleCancellationFailureEvent");
        state = DecisionState.INITIATED;
        stateHistory.add(state.toString());
        break;
      default:
        super.handleCancellationFailureEvent(event);
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