println("  public void accept(Visitor v) throws jjtraveler.VisitFailure {");
println("  public void accept(jjtraveler.Visitor v) throws jjtraveler.VisitFailure {");
	private void genAltVisitableInterface(Type type, Alternative alt) {		String altClassName = className(alt);		println("  public void accept(Visitor v) throws jjtraveler.VisitFailure {");		println("    v.visit_" + altClassName + "(this);");		println("  }");		println();	}