dart - How to Remove a Polymer paper-listbox Item in an AngularDart Component -

i generate paper-listbox follows:

  <paper-listbox  class="scroll-list gutter" id="index">     <paper-item class="index-entry" *ngfor="let composition of compositions" [class.selected]="composition == selectedcomposition" (click)="onselect(composition)">       {{ composition.name }}     </paper-item>   </paper-listbox> 

i have method deletes item database. want remove corresponding entry list well. found this stackoverflow question , tried it. gave no such method error when ran it. tried:

paperlistbox index; ... index = queryselector('#index'); ... index.remove(); 

it removes entire listbox. in ball park tried:

index.selecteditem().remove(); 

that gave me browser console error:

original exception: class 'paperitem' has no instance method 'call'.  nosuchmethoderror: method not found: 'call' receiver: instance of 'paperitem' arguments: [] 

given error mentions paper-item makes me think i'm getting close, i'm out of ideas. how 1 delete paper-listbox item? credit, how 1 add item? that's next task.

just remove item composition , *ngfor updates list of <paper-item ...> entries automatically.