final Map<Post, List<PostReply>> repliedPosts = new HashMap<Post, List<PostReply>>();
for (PostReply reply : replies) {
Optional<Post> post = reply.getPost();
final Map<Post, List<PostReply>> repliedPosts = new HashMap<Post, List<PostReply>>();
for (PostReply reply : replies) {
Optional<Post> post = reply.getPost();