public void addBuildScript(String pathname){
  _buildScripts.add(pathname);
  setDirtyAndFirePropertyChange("addBuildScript",pathname,null);
}

public void addBuildScript ( String pathname ) { _buildScripts . add ( pathname ) ; setDirtyAndFirePropertyChange ( "addBuildScript" , pathname , null ) ; }
add a script to run before a train is built
