@Override
	public List<DomainFile> findCheckedOutFiles(TaskMonitor monitor)
			throws IOException, CancelledException {
		List<DomainFile> list = new ArrayList<>();
		findCheckedOutFiles("/", list, monitor);
		return list;
	}
Find all project files which are currently checked-out
@param monitor task monitor (no progress updates)
@return list of current checkout files
@throws IOException if IO error occurs
@throws CancelledException if task cancelled
Ghidra/Framework/Project/src/main/java/ghidra/framework/data/DefaultProjectData.java