code: public Task<Void> confirmUser(@NonNull final String token, @NonNull final String tokenId) {
      return dispatcher.dispatchTask(
          new Callable<Void>() {
            @Override
            public Void call() {
              confirmUserInternal(token, tokenId);
              return null;
            }
          });
    }
docs: Confirms a user with the given token and token id.
  
  @param token the confirmation token.
  @param tokenId the id of the confirmation token.
  @return A {@link Task} that completes when confirmation completes/fails.