requireNullableFields

Whether nullable fields must be present in JSON.

When respectDefaultPresence is true: additionally requires nullable fields even when they have a default value (e.g. val x: String? = null).

When respectDefaultPresence is false:

• true: All fields are required (must be present, can be null).

• false: Only non-nullable fields are required.

Example with requireNullableFields = true:

fun writeLog(level: String, exception: String? = null)

Generates:

{
  "required": ["level", "exception"],
  "properties": {
    "level": { "type": "string" },
    "exception": { "type": ["string", "null"] }
  }
}

Default: false