copyWith method
      
Context
copyWith({ 
    
    
- PdfPage? page,
- PdfGraphics? canvas,
- Matrix4? ctm,
- HashMap<Type, Inherited> ? inherited,
Implementation
Context copyWith(
    {PdfPage? page,
    PdfGraphics? canvas,
    Matrix4? ctm,
    HashMap<Type, Inherited>? inherited}) {
  return Context._(
      document: document,
      page: page ?? _page,
      canvas: canvas ?? _canvas,
      inherited: inherited ?? _inherited);
}