public void setGroupByKey(String groupByKey) {
        this.groupByKey = groupByKey;
    }
<p>
Groups the result based on ACCOUNT_ID or AWS_REGION.
</p>

@param groupByKey
       Groups the result based on ACCOUNT_ID or AWS_REGION.
@see ConfigRuleComplianceSummaryGroupKey
aws-java-sdk-config/src/main/java/com/amazonaws/services/config/model/GetAggregateConfigRuleComplianceSummaryRequest.java