code: public IceMediaStream addMediaStream(String streamName, boolean rtcp, boolean rtcpMux) {
  		if (!this.mediaStreams.containsKey(streamName)) {
  			// Updates number of maximum allowed candidate pairs
  			this.maxSelectedPairs += (rtcp && !rtcpMux) ? 2 : 1;
  			// Register media stream
  			return this.mediaStreams.put(streamName, new IceMediaStream(streamName, rtcp, rtcpMux));
  		}
  		return null;
  	}
docs: Creates and registers a new media stream with an RTP component.<br>
  An secondary component may be created if the stream supports RTCP.
  
  @param streamName
  the name of the media stream
  @param rtcp
  Indicates whether the media server supports RTCP.
  @param rtcpMux
  Indicates whether the media stream supports <a
  href=""http://tools.ietf.org/html/rfc5761">rtcp-mux</a>
  @return The newly created media stream.