question: public void addChannelMap ( ChannelMap channelMap ) { if ( ! mChannelMaps . contains ( channelMap ) ) { mChannelMaps . add ( channelMap ) ; int index = mChannelMaps . indexOf ( channelMap ) ; fireIntervalAdded ( this , index , index ) ; broadcast ( new ChannelMapEvent ( channelMap , Event . ADD ) ) ; } }
target:  Adds the channel map to this model 