SectionStyle constructor
      
      SectionStyle({ 
    
    
- List<SectionColumnProperties> ? columnProperties,
- String? columnSeparatorStyle,
- String? contentDirection,
- String? defaultHeaderId,
- String? evenPageHeaderId,
- String? firstPageHeaderId,
- bool? flipPageOrientation,
- Dimension? marginBottom,
- Dimension? marginHeader,
- Dimension? marginLeft,
- Dimension? marginRight,
- Dimension? marginTop,
- int? pageNumberStart,
- String? sectionType,
Implementation
SectionStyle({
  this.columnProperties,
  this.columnSeparatorStyle,
  this.contentDirection,
  this.defaultFooterId,
  this.defaultHeaderId,
  this.evenPageFooterId,
  this.evenPageHeaderId,
  this.firstPageFooterId,
  this.firstPageHeaderId,
  this.flipPageOrientation,
  this.marginBottom,
  this.marginFooter,
  this.marginHeader,
  this.marginLeft,
  this.marginRight,
  this.marginTop,
  this.pageNumberStart,
  this.sectionType,
  this.useFirstPageHeaderFooter,
});