PageElement constructor
      
      PageElement({ 
    
    
- String? description,
- Group? elementGroup,
- Image? image,
- Line? line,
- String? objectId,
- Shape? shape,
- SheetsChart? sheetsChart,
- Size? size,
- SpeakerSpotlight? speakerSpotlight,
- Table? table,
- String? title,
- AffineTransform? transform,
- Video? video,
- WordArt? wordArt,
Implementation
PageElement({
  this.description,
  this.elementGroup,
  this.image,
  this.line,
  this.objectId,
  this.shape,
  this.sheetsChart,
  this.size,
  this.speakerSpotlight,
  this.table,
  this.title,
  this.transform,
  this.video,
  this.wordArt,
});