This compiles ``` install(Authentication) { ...

# ktor

[Szymon Lipiński]

This compiles

install(Authentication) {
        basic {
            realm = "ktor"
            validate { credentials ->
                if (credentials.name == credentials.password) {
                    UserIdPrincipal(credentials.name)
                } else {
                    null
                }
            }
        }