在scala play2.6中如何在ActionBuilder中设置会话？

import play.api.mvc._

class SessionActionBuilder extends ActionBuilder[Request, AnyContent] {
  override def invokeBlock[A](request: Request[A], block: Request[A] => Future[Result]): Future[Result] = {
    // 在这里进行会话设置的逻辑
    val sessionId = request.session.get("sessionId").getOrElse(java.util.UUID.randomUUID().toString)
    val updatedRequest = request.withSession(request.session + ("sessionId" -> sessionId))
    
    block(updatedRequest)
  }
}

import javax.inject.Inject
import play.api.mvc._

class MyController @Inject()(cc: ControllerComponents) extends AbstractController(cc) {
  val sessionAction = new SessionActionBuilder

  def index() = sessionAction { implicit request =>
    // 在这里可以访问设置好的会话
    val sessionId = request.session.get("sessionId").getOrElse("No session found")
    Ok(s"Session ID: $sessionId")
  }
}