message: FIXED needs repair on open
diff: @@ -95,7 +95,7 @@ export default class Slide {
  * @example url `background: { path:'https://some.url/image.jpg'}`
  * @since v3.3.0
  */
  - private _background: BackgroundProps = {}
  + private _background: BackgroundProps
  public set background(props: BackgroundProps) {
  this._background = props
  //genObj.addBackgroundDefinition(props, this) // WHY ARE WE CALLING THIS? // FIXME: WIP:
  