code: function(wireConfig) {
  	
  		var klass = WireIt.wireClassFromXtype(wireConfig.xtype);
     
        var src = wireConfig.src;
        var tgt = wireConfig.tgt;
     
        var terminal1 = this.containers[src.moduleId].getTerminal(src.terminal);
        var terminal2 = this.containers[tgt.moduleId].getTerminal(tgt.terminal);
        var wire = new klass( terminal1, terminal2, this.el, wireConfig);
        wire.redraw();
     
        return wire;
     }
docs: Instanciate a wire given its "xtype" (default to WireIt.Wire)
  @method addWire
  @param {Object} wireConfig  Wire configuration object (see WireIt.Wire class for details)
  @return {WireIt.Wire} Wire instance build from the xtype