code: @Override
      public JingleMediaSession createMediaSession(PayloadType payloadType, final TransportCandidate remote, final TransportCandidate local, final JingleSession jingleSession) {
          return new AudioMediaSession(payloadType, remote, local, null,null);
      }
docs: Returns a new jingleMediaSession.
  
  @param payloadType payloadType
  @param remote      remote Candidate
  @param local       local Candidate
  @return JingleMediaSession