@startuml
class Client {
    + main(args : String[]) {static}
}

class RealVideoObject {
    - videoData : String
    + RealVideoObject()
    + process()
    + getVideoData() : String
    - heavyInitialConfiguration() : void
}

interface ExpensiveObject {
    + process() {abstract}
}

class VideoObjectProxy {
    - realVideoObject : RealVideoObject
    + VideoObjectProxy()
    + process()
    + setRealVideoObject(realVideoObject : RealVideoObject) : void
    + getRealVideoObject() : RealVideoObject
}

VideoObjectProxy -->  "-realVideoObject" RealVideoObject
RealVideoObject ..|> ExpensiveObject
VideoObjectProxy ..|> ExpensiveObject
@enduml