/** Heya this is Yen, I code backend for problem solving*/sealedtraitSkill {defdescription:String}caseclassBackendDevelopment(name:String)extendsSkill {defdescription:String=s"$name involves building backend services with JVM and Python."}caseclassDataEngineering(name:String)extendsSkill {defdescription:String=s"$name focuses on big data, streaming, and data platform development."}caseclassSystemArchitecture(name:String)extendsSkill {defdescription:String=s"$name includes system design and product ownership."}objectSkillAppextendsApp {valskills:List[Skill]=List(BackendDevelopment("Backend Development"),DataEngineering("Data Engineering"),SystemArchitecture("System Architecture")  )  skills.foreach(s=> println(s.description))}