http4k / org.http4k.lens / RequestContextKey / optional
fun <T> optional(store: Store<RequestContext>, name: String = UUID.randomUUID().toString()): BiDiLens<Request, T?>
fun <T> optional(store:
Store
<
RequestContext
>, name:
String
= UUID.randomUUID().toString()):
BiDiLens
Request
, T?>