fact = new InstructionFactory(constantPoolGen);
fact = new InstructionFactory(myGen, constantPoolGen);
    public LazyClassGen(        String class_name,        String super_class_name,        String file_name,        int access_flags,        String[] interfaces)     {        myGen = new ClassGen(class_name, super_class_name, file_name, access_flags, interfaces);		constantPoolGen = myGen.getConstantPool();        fact = new InstructionFactory(constantPoolGen);    }