import com.amazonaws.services.simplesystemsmanagement.AWSSimpleSystemsManagementClient
import com.twitter.util.tunable.{Tunable, TunableMap}
import io.github.cyberagent.tunable.aws.ssm.AwsSsmTunableMap

val client = AWSSimpleSystemsManagementClient.builder().build()
val tunableMap = AwsSsmTunableMap("/path/to/tunable", client)

val tunable: Tunable[String] = tunableMap(TunableMap.Key[String]("key"))

tunable() match {
  case None        => println("tunable is not configured")
  case Some(value) => println(value)
}