@startuml
Client -> Component
Component <|- ConcreteComponent
Component <|-- Decorator
Decorator <|-- BehaviorDecorator
Decorator <|- StateDecorator

interface Component {
  {abstract} +Request()
}

class ConcreteComponent {
  +Request()
}
class Decorator {
  -aComponent : Component*
  +Request()
}
note left of Decorator
  Decorator::Request() {
    aComponent->Request();
  }
end note

class BehaviorDecorator {
  +Request()
  -AddedOperation()
}
note left of BehaviorDecorator
  BehaviorDecorator::Request() {
    Decorator::Request();
    AddedOperation();
  }
end note
class StateDecorator {
  -addedState
  +Request()
}

hide empty attributes
hide empty methods
@enduml