public void setTreeMapSort(java.util.Collection<FieldSortOptions> treeMapSort) {
        if (treeMapSort == null) {
            this.treeMapSort = null;
            return;
        }

        this.treeMapSort = new java.util.ArrayList<FieldSortOptions>(treeMapSort);
    }
<p>
The sort configuration of group by fields.
</p>

@param treeMapSort
       The sort configuration of group by fields.
aws-java-sdk-quicksight/src/main/java/com/amazonaws/services/quicksight/model/TreeMapSortConfiguration.java