public void selectDomainFile(DomainFile domainFile) {
		if (domainFile != null) {
			selectDomainFiles(Set.of(domainFile));
		}
	}
Select the root data folder (not root node in the tree which shows the project name).
Ghidra/Framework/Project/src/main/java/ghidra/framework/main/datatree/ProjectDataTreePanel.java