docs: synchronized public boolean addChannel(final Channel channel)
      {
          boolean newChannel = false;
          if (!this.channels.contains(channel))
          {
              this.channels.add(channel);
              this.channelCount++;
              newChannel = true;
          }
          else
              MeetmeRoom.logger.error("rejecting " + channel + " already in meetme."); //$NON-NLS-1$ //$NON-NLS-2$
          return newChannel;
      }