docs: public synchronized JingleSession accept() throws XMPPException, SmackException, InterruptedException {
          JingleSession session;
          synchronized (manager) {
              session = manager.createIncomingJingleSession(this);
              // Acknowledge the IQ reception
              session.setSid(this.getSessionID());
              // session.sendAck(this.getJingle());
              session.updatePacketListener();
              session.receivePacketAndRespond(this.getJingle());
          }
          return session;
      }