TreeMapBuilder.ParentField Method

Name	Parameters	Description
ParentField(JS)	value	Specifies the name of the data source field that provides parent IDs for items. Applies to plain data sources only. Mirrors the client-side parentField option.
ParentField(String)	value	Specifies the name of the data source field that provides parent IDs for items. Applies to plain data sources only. Mirrors the client-side parentField option.