scala3-Exports.scala

class Authenticate(authService: AuthService):
  private var authenticated = false
  def isAuthenticated: Boolean = authenticated
  
  final def apply(username: String, password: String): Boolean = 
    authenticated = ...
    authenticated

object Service:
  def doStuff[T](f: => T): Try[T] = ...

  private val auth = new Authenticate(...)

  export auth.{isAuthenticated, apply as authenticate}