I’ve got a request object like this:

public record CreateRequest(
  @Schema(nullable = true) List<Optional<String>> field1,
  @Schema(nullable = true) List<Optional<Struct>> field2) {
  public record Struct() {}
}

It generates this openapi.json:

      "CreateRequest": {
        "properties": {
          "field1": {
            "items": {
              "nullable": true,
              "type": "string"
            },
            "nullable": true,
            "type": "array"
          },
          "field2": {
            "items": {
              "$ref": "#/components/schemas/Struct"
            },
            "nullable": true,
            "type": "array"
          }
        },
        "required": [],
        "type": "object"
      },

• field1 is generated correctly, with "nullable": true, under items.
• field2 does not have "nullable": true, under items despite being defined in the same way.

How can I define field2 so that it correctly puts "nullable": true, under items?