@Override
	public boolean hasNext() {
		queueNextFiles();
		return !fileDeque.isEmpty();
	}
{@inheritDoc}

@throws UncheckedIOException if an IO-related error occurred on 
  {@link GFileSystem#getListing(GFile)}
Ghidra/Features/Base/src/main/java/ghidra/formats/gfilesystem/GFileSystemIterator.java