A builder for InsertWidget objects. Developers cans insert a widget into a card by passing a InsertWidget to ModifyCard

Only available for Google Workspace add-ons that extend Google Workspace Studio.

Sample usage:

const newWidget = CardService.newDecoratedText().setText('New Widget');

const insertWidget = AddOnsResponseService.newInsertWidget()
                                          .insertAboveWidget('sample_id')
                                          .setWidget(newWidget);

const modifyCard = AddOnsResponseService.newModifyCard().setInsertWidget(insertWidget);