@Override
	public String toString() {
		String classname = getClass().getName();
		classname = classname.substring(classname.lastIndexOf('.'));
		return name + " - " + classname;
	}
Returns the hidden user-filesystem associated with this objects domain file, or null if
unknown.

@return user data file system
Ghidra/Framework/Project/src/main/java/ghidra/framework/data/DomainObjectAdapter.java