### Question:
MediaItemHandler { @Operation(httpMethods = "GET") public Future<?> get(SocialRequestItem request) throws ProtocolException { Set<UserId> userIds = request.getUsers(); Set<String> optionalAlbumIds = ImmutableSet.copyOf(request.getListParameter("albumId")); Set<String> optionalMediaItemIds = ImmutableSet.copyOf(getRequestMediaItemIds(request)); HandlerPreconditions.requireNotEmpty(userIds, "No user ID specified"); String albumId = null; if (optionalAlbumIds.size() == 1) { albumId = Iterables.getOnlyElement(optionalAlbumIds); } else if (optionalAlbumIds.size() > 1) { throw new IllegalArgumentException("Multiple Album IDs not supported"); } if (albumId == null && !optionalMediaItemIds.isEmpty()) { throw new IllegalArgumentException("Cannot fetch by MediaItem ID without Album ID"); } if (userIds.size() > 1) { if (!optionalMediaItemIds.isEmpty()) { throw new IllegalArgumentException("Cannot fetch MediaItem by ID for multiple users"); } else if (albumId != null) { throw new IllegalArgumentException("Cannot fetch MediaItem by Album for multiple users"); } } if (!optionalMediaItemIds.isEmpty()) { if (optionalMediaItemIds.size() == 1) { return service.getMediaItem(Iterables.getOnlyElement(userIds), request.getAppId(), albumId, Iterables.getOnlyElement(optionalMediaItemIds), request.getFields(), request.getToken()); } else { return service.getMediaItems(Iterables.getOnlyElement(userIds), request.getAppId(), albumId, optionalMediaItemIds, request.getFields(), collectionOptionsFactory.create(request), request.getToken()); } } if (albumId != null) { return service.getMediaItems(Iterables.getOnlyElement(userIds), request.getAppId(), albumId, request.getFields(), collectionOptionsFactory.create(request), request.getToken()); } return service.getMediaItems(userIds, request.getGroup(), request .getAppId(), request.getFields(), collectionOptionsFactory.create(request), request.getToken()); } @Inject  MediaItemHandler(
      MediaItemService service, ContainerConfig config,
      CollectionOptionsFactory collectionOptionsFactory); @Operation(httpMethods = "GET") Future<?> get(SocialRequestItem request); @Operation(httpMethods = "DELETE") Future<?> delete(SocialRequestItem request); @Operation(httpMethods = "POST", bodyParam = "data") Future<?> create(SocialRequestItem request); @Operation(httpMethods = "PUT", bodyParam = "data") Future<?> update(SocialRequestItem request); @Operation(httpMethods = "GET", path = "/@supportedFields") List<Object> supportedFields(RequestItem request);  }### Answer:
@Test public void testGet() throws Exception { }