docs: public static void assertEquals(final Path expected, final Path actual) throws IOException {
  		containsAll(actual, expected);
  		if(Files.exists(expected)) {
  			containsAll(expected, actual);
  			walkFileTree(expected, new SimpleFileVisitor<Path>() {
  				@Override
  				public FileVisitResult visitFile(final Path file, final BasicFileAttributes attrs) throws IOException {
  					final Path sub = relativize(expected, file);
  					final Path therePath = resolve(actual, sub);
  					final long hereSize = Files.size(file);
  					final long thereSize = Files.size(therePath);
  					assertThat(thereSize, asserts(() -> sub + " is " + hereSize + " bytes", t -> t == hereSize));
  					assertByteEquals(sub, file, therePath);
  					return super.visitFile(file, attrs);
  				}
  			});
  		}
  	}