Key words:

UML

Command Pattern

Command

Pseudo Code

class Invoker {
  ICommand on;
  ICommand off;
  ICommand up;
  ICommand down;

  public Invoker(on, off, up, down) {
    this.on = on;
    this.off = off;
    this.up = up;
    this.down = down;
  }

  public void clickOn() {
    this.on.execute()
  }

  public void clickOff() {
    this.off.execute()
  }

  public void clickUp() {
    this.up.execute()
  }

  public void clickDown() {
    this.down.execute()
  }
  ...
}

interface ICommand {
  void execute();
  void unexecute();
}

class LightOnCommand implements ICommand {
  Light light;
  
  public LightOnCommand(Light l) {
    this.light = l;
  }
}

Receiver light = new Receiver();
Invoker remoteCtrl = new Invoker(new LightOnCommand(light),
                                 new LightOffCommand(light),
                                 new LightUpCommand(light),
                                 new LightDownCommand(light));

remoteCtrl.clickOn();

Reference