Right now my Api returns a model with a Dictionary<int, string> property in it:

public Dictionary<int, string> Subdivisions { get; set; }

When I run OpenApi Generator, the output class has

public Dictionary<string, string> Subdivisions { get; set; }

I know the JSON spec doesn't allow integer keys, but this really screws up consumers of that API which are expecting <int, string>.

What can I do to ensure my output class has Dictionary<int, string> instead of Dictionary<string, string>?