Configuration:
- PDF.js version: 2.0.550

Steps to reproduce the problem:
1. Render document in SVG mode `renderMode="svg"`

What is the expected behavior? (add screenshot)
Rendering annotations same way as they rendered on canvas

What went wrong? (add screenshot)
```
Warning: Unimplemented operator beginAnnotations
Warning: Unimplemented operator endAnnotations
```
return this.messageHandler.sendWithPromise("GetFieldObjects", null);
  }
  hasJSActions() {
    return (this._hasJSActionsPromise ||= this.messageHandler.sendWithPromise(
      "HasJSActions",
      null
    ));
  }
  getCalculationOrderIds() {
    return this.messageHandler.sendWithPromise("GetCalculationOrderIds", null);
  }
  getDestinations() {
    return this.messageHandler.sendWithPromise("GetDestinations", null);
  }
  getDestination(id) {
    if (typeof id !== "string") {
      return Promise.reject(new Error("Invalid destination request."));
    }
    return this.messageHandler.sendWithPromise("GetDestination", {
      id,
    });
  }
  getPageLabels() {