Documentation plugin mark as required field in response

I’m using plugin.
After generating the full_documentation.json file my all fields in the response do not have a “required” flag, while in the admin-panel some fields in the models are marked as “required”.

At first glance, it may seem that there is nothing wrong with this, but I’m using a typescript generator for swagger (github). This library based on full_documentation.json file marks all fields as optional.

I have single type of page where title is required:

So in the full_documentation.json I expect to see a field title as “required” in response.