How to use the babylonjs.ArcRotateCamera function in babylonjs

initScene() {
    this.scene.clearColor = new BABYLON.Color3(0.1, 0.1, 0.1);
    this.scene.ambientColor = new BABYLON.Color3(0.1, 0.1, 0.1);
    // This creates and positions a free camera (non-mesh)
    this.camera = new BABYLON.ArcRotateCamera(
      "camera",
      0,
      0,
      10,
      BABYLON.Vector3.Zero(),
      this.scene
    );

    // This targets the camera to scene origin
    this.camera.setTarget(BABYLON.Vector3.Zero());

    // This attaches the camera to the canvas
    this.camera.attachControl(this.canvas, true);

    this.camera.setPosition(new BABYLON.Vector3(500, 400, -100));
    this.camera.useAutoRotationBehavior = true;

initScene() {
    this.scene.clearColor = new BABYLON.Color3(0.7, 0.7, 0.7);
    // This creates and positions a free camera (non-mesh)
    this.camera = new BABYLON.ArcRotateCamera('camera', 0, 0, 10, BABYLON.Vector3.Zero(), this.scene);

    // This targets the camera to scene origin
    this.camera.setTarget(BABYLON.Vector3.Zero());

    // This attaches the camera to the canvas
    this.camera.attachControl(this.canvas, true);

    this.camera.setPosition(new BABYLON.Vector3(500, 400, -100));
    this.camera.useAutoRotationBehavior = true;

    // This creates a light, aiming 0,1,0 - to the sky (non-mesh)
    var light = new BABYLON.HemisphericLight('global_light', new BABYLON.Vector3(0, 1, 0), this.scene);

    light.intensity = 0.8;
  }

setCamera = () => {
     this.camera = new ArcRotateCamera("Camera", Math.PI * 2, Tools.ToRadians(80), 20, new Vector3( 0, 5, -5 ), this.scene);
     this.camera.attachControl(this.stage, true);
     this.camera.lowerRadiusLimit = 9
     this.camera.upperRadiusLimit = 20;
     this.camera.lowerBetaLimit = this.camera.beta - Tools.ToRadians(80)
     this.camera.upperBetaLimit = this.camera.beta + Tools.ToRadians(20);
     this.camera.lowerAlphaLimit = this.camera.alpha - Tools.ToRadians(180)
     this.camera.upperAlphaLimit = this.camera.alpha + Tools.ToRadians(180)
     
  }

createScene(engine,canvas) {
      const camera = new BABYLON.ArcRotateCamera("camera1",0, 0, 200,new BABYLON.Vector3(0,0,0), debugger3d.scene);
      camera.radius = 200;
      camera.setTarget(new BABYLON.Vector3(0,0,0));
      camera.attachControl(canvas, false);
      debugger3d.camera= camera;

      const light1 = new BABYLON.HemisphericLight('light1', new BABYLON.Vector3(1,1,1), debugger3d.scene);
      const light2 = new BABYLON.HemisphericLight('light2', new BABYLON.Vector3(-1,-1,0), debugger3d.scene);

      light1.diffuse = new BABYLON.Color3(1, 1, 1);
      light1.specular = new BABYLON.Color3(1, 1, 1);

      light2.diffuse = new BABYLON.Color3(1, 1, 1);
      light2.specular = new BABYLON.Color3(1, 1, 1);

      debugger3d.scene.clearColor = new BABYLON.Color3(0.3,0.3,0.3);