code: function(event, args) {
        var wire = args[0];
        // add the wire to the list if it isn't in
        if( WireIt.indexOf(wire, this.wires) == -1 ) {
           this.wires.push(wire);
           this.eventAddWire.fire(wire);
        } 
     }
docs: This method is called when a wire is added to one of the terminals
  @method onAddWire
  @param {Event} event The eventAddWire event fired by the terminal
  @param {Array} args This array contains a single element args[0] which is the added Wire instance