public String getLookbackWindow() {
        return this.lookbackWindow;
    }
<p>
The number of past days of data used for retraining.
</p>

@return The number of past days of data used for retraining.
aws-java-sdk-lookoutequipment/src/main/java/com/amazonaws/services/lookoutequipment/model/RetrainingSchedulerSummary.java