Given this Angular generic service snippet:

Given this Angular generic service snippet:

export class DataService<T> {
  private items: T[] = [];
  add(item: T) { this.items.push(item); }
  getAll(): T[] { return this.items; }
}

const service = new DataService<string>();
service.add('hello');
console.log(service.getAll());

What will be logged to the console?