Explicilty set request body field example as null, instead of "string" or "null"

[eldarj]

Related to this https://github.com/swagger-api/swagger-inflector/issues/371 and these PRs I suppose:

• https://github.com/swagger-api/swagger-core/pull/3637
• https://github.com/swagger-api/swagger-parser/pull/1400

I'm using spring boot and I cannot set an example for a given field in a request body as explicitly null

For example:

    @Schema(description = "Some field")
    public String field

always ends up either as "string". I tried passing the defaultValue and nullable args to the annotation, but the best I could get is "null"

Actual:

{
  "field" : "string"
}

or

{
  "field" : "null"
}

Expected:

{
  "field" : null
}

How can I accomplish this?