@startuml
interface RendererInterface {
    +renderData()
}

abstract class Decorator {
    #$wrapped : RendererInterface
    +__construct(RendererInterface $wrappable)
}

class RenderInJson {
    +renderData()
}

class RenderInXml {
    +renderData()
}

class Webservice {
    #$data : mixed
    +__construct($data)
    +renderData()
}

Decorator <|.. RenderInJson
Decorator <|.. RenderInXml
RendererInterface <|.. Decorator
RendererInterface <|.. Webservice
@enduml