public String mentions(@PathVariable String name, Model model) {
checkUser(name);
model.addAttribute("name", name);
String targetUid = retwis.findUid(name);
model.addAttribute("posts", retwis.getMentions(targetUid, new Range()));
model.addAttribute("followers", retwis.getFollowers(targetUid));
model.addAttribute("following", retwis.getFollowing(targetUid));
if (RetwisSecurity.isSignedIn() && !targetUid.equals(RetwisSecurity.getUid())) {
model.addAttribute("also_followed", retwis.alsoFollowed(RetwisSecurity.getUid(), targetUid));