code: function(s, args, ef) {
  
          this.log(this.type + "->" + "sub: " +  s.id);
  
          var ret;
  
          ret = s.notify(args, this);
  
          if (false === ret || this.stopped > 1) {
              this.log(this.type + " cancelled by subscriber");
              return false;
          }
  
          return true;
      }
docs: Notify a single subscriber
  @method _notify
  @param s {Subscriber} the subscriber
  @param args {Array} the arguments array to apply to the listener
  @private