@Override
                public FileVisitResult visitFile(final Path file, final BasicFileAttributes attrs) throws IOException {
                    count.incrementAndGet();
                    return super.visitFile(file, attrs);
                }
@return True if path contains no files or directories.
@throws IOException if it is unable to list the contents of path
stroom-util/src/main/java/stroom/util/io/FileUtil.java