public String getGroupKey() {
        return this.groupKey;
    }
<p>
The name of the property that defines the group in the query results, as specified by the groupBy property in the
query request.
</p>

@return The name of the property that defines the group in the query results, as specified by the groupBy
        property in the query request.
aws-java-sdk-macie2/src/main/java/com/amazonaws/services/macie2/model/GroupCount.java