(data) attribute duplicate in multiple example

[itumanov]

<ng-select (data)="value" [multiple]="true" [items]="items" [disabled]="disabled" (data)="refreshValue($event)"
It's code from http://valor-software.com/ng2-select/ (multiple example), (data) appears 2 times.
Seems like (data)="value" do nothing. So it's a question, how to set initial value of multiselect?

[itumanov]

ok, found it in issues below: [active] attribute to set initial, but what the purpose of (data)="value" in example?