code: public void logout(Context context, ResponseListener listener) {
          AuthorizationRequestManager.RequestOptions options = new AuthorizationRequestManager.RequestOptions();
          options.parameters = new HashMap<String,String>(1);
          options.parameters.put("client_id", preferences.clientId.get());
          options.headers = new HashMap<>(1);
          addSessionIdHeader(options.headers);
          options.requestMethod = Request.GET;
          try {
              authorizationRequestSend(context,"logout", options, listener);
          } catch (Exception e) {
              logger.debug("Could not log out");
          }
      }
docs: logs out user
  @param context Android Activity that will handle the authorization (like facebook or google)
  @param listener Response listener