Updating an Angular app with the new input signal; changes so far have behaved as documented; declared:
imageID = input<number>()
however in one component, the signal variable is returning the value, not the function, e.g.:

@Component({
  selector: 'app-pic-captioned',
  templateUrl: './img-captioned.component.html',
  styleUrls: ['./img-captioned.component.scss'],
})
export class ImgCaptionedComponent implements OnInit {
  caption = input<string>();

  constructor() {}

  ngOnInit() {
    console.log('this.caption:', this.caption); // this.caption Mississauga
    console.log('this.caption()', this.caption()); // ERROR TypeError: this.caption is not a function
  }
}

what is going on?