In a real-world scenario you would not have to re-generate your stubcode because you did not change your table grammars or tables. After adding the second configuration, all you would have to do is write the code that your application would use to switch between the configurations whenever a message of that type is parsed. However, for the purposes of this tutorial and to avoid any complications, you must generate your stubcode based on the VMD file you just created. This will be explained in the next section.