public void setLookbackWindow(String lookbackWindow) {
        this.lookbackWindow = lookbackWindow;
    }
<p>
The number of past days of data that will be used for retraining.
</p>

@param lookbackWindow
       The number of past days of data that will be used for retraining.
aws-java-sdk-lookoutequipment/src/main/java/com/amazonaws/services/lookoutequipment/model/UpdateRetrainingSchedulerRequest.java