Breaks for fields with 2 modifiers

[rMazeiks]

When confronted with...

class Foo {
  private readonly bar: string;
  private readonly baz: number;
}

...the tool should output...

    public getBar(): string {
        return this.bar;
    }

    public getBaz(): number {
        return this.baz;
    }

...but instead generates...

    public getReadonly(): bar: {
        return this.readonly;
    }

    public setReadonly(readonly: bar:): void {
        this.readonly = readonly;
    }

    public getReadonly(): baz: {
        return this.readonly;
    }

    public setReadonly(readonly: baz:): void {
        this.readonly = readonly;
    }

With only the private modifier, everything works as expected. With only the readonly modifier, getters are generated correctly, but setters are also generated, even though they shouldn't be. It would be nice if the extension supported such corner cases.

[rMazeiks]

Likely related to #4