API to hide parts of the code

Hi,

we use the monaco editor for a project and we need to hide some parts of the code from the user, because there is a Header and a Footer generated, and only a part between which should be editable by the user. We need the whole file in the background, to have a running code completion.

export class GeneratedClass {
     public GeneratedProperty1: string;
     public GeneratedProperty2: string;

    construcor() {}

    // User Code starts here
    public Property1ByUser: string;
    public Property2ByUser: srting;

    public MethodByUser() {}
    // User Code ends here
}

The user should only be able to edit the code between the two comments.
Is it possible to hide the other parts from the user, or disable them in any way?

Thanks,

Achim

No file or test is named. Start by reviewing the Monaco editor API and the described generated header/footer scenario, then determine the scope of an API for protecting surrounding text while retaining completion for the full file. Done should be defined as a documented, testable way to limit editing to the marked user-code region.