Optional config item without default value

[raharrison]

Is it possible to create a config property which is optional without having to provide a default value? Thinking something like the below which can be retrieved from the Config object as a Kotlin nullable variable. Have the case where a config value is either defined or not, there would be no default value.

object AppSpec : ConfigSpec() {
    val host by required("0.0.0.0")
    val resourcePath by optional<String>() // no default value
}

Then when retrieved something like

// as nullable var
val resourcePath : String? = config[AppSpec.resourcePath]

(Great library by the way)

[raharrison]

Nearly had it can be achieved with

val resourcePath by optional<String>(null)