@Override
	public String getDefaultToolName() {
		return null;
	}
{@code FolderLinkContentHandler} provide folder-link support.  
Implementation relies on {@link AppInfo#getActiveProject()} to provide life-cycle 
management for related transient-projects opened while following folder-links.
Ghidra/Framework/Project/src/main/java/ghidra/framework/data/FolderLinkContentHandler.java