Demo of "This function has a reified type parameter and thus can only be inlined at compilation time, not called directly" Ktor error

ThrowUndefinedForReified.kt

@Serializable
data class Age(val value: Int)

@Serializable
data class Update<T>(val old: T, val new: T)

fun main() {
    embeddedServer(Netty, port = 8080) {
        install(ContentNegotiation) {
            json()
        }
        routing {
            update<Age>()
        }
    }.start(wait = true)
}

inline fun <reified T> Route.update() {
    post("/") {
        val update = call.receive<Update<T>>()
        application.log.info("XXX update={}", update)
        call.respond(HttpStatusCode.OK, "OK")
    }
}