function updateRowState(oState) {
		const mProxyInfo = oState.context["_mProxyInfo"];

		oState.level = mProxyInfo.level;
		oState.expandable = !mProxyInfo.isLeaf;
		oState.expanded = mProxyInfo.isExpanded;

		if (TableUtils.Grouping.isInGroupMode(this)) {
			const sHeaderProp = this.getGroupHeaderProperty();

			if (sHeaderProp) {
				oState.title = oState.context.getProperty(sHeaderProp);
			}

			if (oState.expandable) {
				oState.type = oState.Type.GroupHeader;
				oState.contentHidden = true;
			}
		}
	}
Initialization of the TreeTable control
@private