public AnalyticsIntentStageResult withGroupByKeys(AnalyticsIntentStageGroupByKey... groupByKeys) {
        if (this.groupByKeys == null) {
            setGroupByKeys(new java.util.ArrayList<AnalyticsIntentStageGroupByKey>(groupByKeys.length));
        }
        for (AnalyticsIntentStageGroupByKey ele : groupByKeys) {
            this.groupByKeys.add(ele);
        }
        return this;
    }
<p>
A list of objects containing the criteria you requested for grouping results and the values of the bins.
</p>
<p>
<b>NOTE:</b> This method appends the values to the existing list (if any). Use
{@link #setGroupByKeys(java.util.Collection)} or {@link #withGroupByKeys(java.util.Collection)} if you want to
override the existing values.
</p>

@param groupByKeys
       A list of objects containing the criteria you requested for grouping results and the values of the bins.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-lexmodelsv2/src/main/java/com/amazonaws/services/lexmodelsv2/model/AnalyticsIntentStageResult.java