nl_tokens: An Channel is where messages are sent to and receive
pl_tokens: function Channel ( id , exchange ) { var self = this ; <mask> . EventEmitter . call ( this ) ; this . id = id ; this . exchange = exchange ; this . exchange . on ( this . id , function ( message ) { self . emit ( 'message' , message ) ; } ) ; this . setMaxListeners ( 0 ) ; }