@startuml
Invoker o-> Command
Command <|- ConcreteCommand
ConcreteCommand -> Receiver
Receiver <-- Client
ConcreteCommand <..Client

interface Invoker {
  {abstract} +Store(Command*)
}
interface Command {
  {abstract} +Execute()
}
class ConcreteCommand {
  -receiver : Receiver*
  +SetReceiver(Receiver*)
  +Execute()
}
class Receiver {
  +Action()
}

note bottom of ConcreteCommand
  ConcreteCommand::SetReceiver(Receiver* r) {
    receiver = r;
  }
  ConcreteCommand::Execute() {
    receiver->Action();
  }
end note

hide empty attributes
hide empty methods
@enduml