How to use the angular-cesium.CesiumEvent.LEFT_CLICK function in angular-cesium

ngOnInit() {
    this.eventManager.register({
      event: CesiumEvent.LEFT_CLICK,
      pick: PickOptions.PICK_FIRST
    }).pipe(
      map((result) => result.cesiumEntities),
      filter(result => result !== null && result !== undefined), )
      .subscribe((result) => {
        console.log(result[0]);
        alert(result[0].ellipse.material.color._value);
      });
  }

ngOnInit() {
    this.selectionManager.initSelection({
      event: CesiumEvent.LEFT_CLICK,
      modifier: CesiumEventModifier.ALT
    });

    this.selectionManager.selectedEntity$().subscribe(selectedEntity => {
      const myEntity = selectedEntity as MyEntity;
      this.layer.update(myEntity, myEntity.id);

      console.log('all selected entities:', this.selectionManager.selectedEntities());
    });
    this.snakBar.open('Click + ALT to selected the plane', 'ok');
  }

ngAfterViewInit(): void {
    setTimeout(() => this.snackBar.open('Click on player icon to choose him', '', {duration: 3000}), 3000);

    this.eventManager = this.mapsManager.getMap().getMapEventsManager();

    this.clickEvent = this.eventManager.register({
      event: CesiumEvent.LEFT_CLICK,
      pick: PickOptions.PICK_ONE,
      entityType: AcEntity,
    });

    this.clickEvent
      .filter(result => result.entities && (result.entities[0] as PlayerFields.Fragment).type === 'PLAYER')
      .map(result => result.entities[0])
      .subscribe(selectedPlayer => {
        if (selectedPlayer.state !== 'DEAD'){
          const currentSelected = this.takeControlService.selectedPlayerToControl;
          if (currentSelected) {
            this.takeControlService.selectedPlayerToControl = currentSelected.id === selectedPlayer.id ? null : selectedPlayer;
          } else {
            this.takeControlService.selectedPlayerToControl = selectedPlayer;
          }
        }

testPlonter() {
    this.eventManager
      .register({
        event: CesiumEvent.LEFT_CLICK,
        pick: PickOptions.PICK_ONE,
        pickFilter: entity => entity.id === '1' || entity.id === '2' || entity.id === '11' || entity.id === '10',
      })
      .pipe(map(result => result.entities))
      .subscribe(result => {
        console.log('plonter result: ' + JSON.stringify(result));
        alert('picked: ' + JSON.stringify(result));
      });
  }

const position = Cesium.Cartesian3.fromRadians(oldPos.longitude + 0.0001, oldPos.latitude);
      this.points$.next({
        id: '1',
        actionType: ActionType.ADD_UPDATE,
        entity: AcEntity.create({
          width: 10,
          color: Cesium.Color.BLUE,
          position,
        }),
      });
    }, 500);


    this.mapEventsManager.register({
      event: CesiumEvent.LEFT_CLICK,
      pick: PickOptions.PICK_ONE
    }).subscribe(result => {
      if (result.cesiumEntities && result.cesiumEntities.length) {
        this.cameraService.trackEntity(result.cesiumEntities[0], {flyTo: true, altitude: 10000});
      }
    });


  }