upload video to twitter via android client

TwitterVideoApiClient.class

public class TwitterVideoApiClient extends TwitterApiClient{

private static final String TWITTER_UPLOAD_URL = "https://upload.twitter.com";
private  RestAdapter twitterVideoApiClientAdapter;

public TwitterVideoApiClient(TwitterSession session) {

    super(session);

    final Gson gson = new GsonBuilder()
            .registerTypeAdapterFactory(new SafeListAdapter())
            .registerTypeAdapterFactory(new SafeMapAdapter())
            .create();

    SSLSocketFactory sslSocketFactory = TwitterCore.getInstance().getSSLSocketFactory();
    TwitterAuthConfig authConfig = TwitterCore.getInstance().getAuthConfig();
    ExecutorService executorService = TwitterCore.getInstance().getFabric()
            .getExecutorService();

    twitterVideoApiClientAdapter = new RestAdapter.Builder()
            .setClient(new AuthenticatedClient(authConfig, session, sslSocketFactory))
            .setEndpoint(TWITTER_UPLOAD_URL)
            .setConverter(new GsonConverter(gson))
            .setExecutors(executorService, new MainThreadExecutor())
            .build();
}

public TwitterUploadVideoInitService videoUploadInitService() {
    return twitterVideoApiClientAdapter.create(TwitterUploadVideoInitService.class);
}

public TwitterUploadVideoAppendService videoUploadAppendService() {
    return twitterVideoApiClientAdapter.create(TwitterUploadVideoAppendService.class);
}

public TwitterUploadVideoFinalizeService videoUploadFinalizeService() {
    return twitterVideoApiClientAdapter.create(TwitterUploadVideoFinalizeService.class);
}

public interface TwitterUploadVideoInitService {
    @FormUrlEncoded()
    @POST("/1.1/media/upload.json")
    void initialize(@Field("command") String command,
                    @Field("media_type") String mediaType,
                    @Field("total_bytes") String totalBytes,
                    Callback<Media> callback);
}

public interface TwitterUploadVideoAppendService {
    @Multipart
    @POST("/1.1/media/upload.json")
    void append(@Part("command") String command,
                @Part("media_id") String mediaId,
                @Part("segment_index") int segmentIndex,
                @Part("media") TypedFile media,
                Callback <Twitter>  callback);
}

public interface TwitterUploadVideoFinalizeService {
    @FormUrlEncoded()
    @POST("/1.1/media/upload.json")
    void finalize(@Field("command") String command,
                  @Field("media_id") String mediaId,
                  Callback<Twitter> callback);
}