public static Snapshot of(final Path path) {
        return of(path, true);
    }
Take a deep snapshot of a directory capturing all relative paths, file sizes,
path types and sha256 hashes of each file. Runs in parallel by default. The root path
is not included in the output and all paths in the snapshot are relative to it.
<p>
It means you can do something like
<pre>{@code
assertThat(DirectorySnapshot.of(path1))
    .isEqualTo(DirectorySnapshot.of(path2))
}</pre>
</p>

@param path The root path to create a snapshot of
stroom-test-common/src/main/java/stroom/test/common/DirectorySnapshot.java