Here is the thing, I wonder if we can set cdkDrag boundary in typescript?

@Input() public container: any;

constructor(public el: ElementRef, private dragDropService: DragDrop) {
}


ngAfterViewInit(): void {
    var ckdDrag = this.dragDropService.createDrag(this.el);
    //TODO: how to set the ckdDrag boundary to this.container

}