Does this library support OpenAPI 3.1?

[fortael]

I couldn’t find any explicit statement about 3.1 support, but I’m unable to generate DTOs when using the 3.1 format. I get an error if I use a type array. I need to mark a field as optional, but in 3.1 the nullable: true parameter was removed in favor of a multi-type approach that includes null.

OAI/OpenAPI-Specification#2244
https://www.openapis.org/blog/2021/02/16/migrating-from-openapi-3-0-to-3-1-0

{
    "type": "object",
    "required": ["filename", "width", "height"],
    "properties": {
        "filename": {
            "type": "string",
            "description": "Thumbnail filename"
        },
        "width": {
            "type": ["integer", "null"],
            "description": "Thumbnail width"
        },
        "height": {
            "type": ["integer", "null"],
            "description": "Thumbnail height"
        }
    }
}

This code causes this error:

  - file:///app/events-src/schemas.json:14:21 -> cannot unmarshal !!seq into string
generation failed:
    main.run
        /go/pkg/mod/github.com/ogen-go/[email protected]/cmd/ogen/main.go:377
exit status 1