CellFormat constructor
      
      CellFormat({ 
    
    
- Color? backgroundColor,
- ColorStyle? backgroundColorStyle,
- Borders? borders,
- String? horizontalAlignment,
- String? hyperlinkDisplayType,
- NumberFormat? numberFormat,
- Padding? padding,
- String? textDirection,
- TextFormat? textFormat,
- TextRotation? textRotation,
- String? verticalAlignment,
- String? wrapStrategy,
Implementation
CellFormat({
  this.backgroundColor,
  this.backgroundColorStyle,
  this.borders,
  this.horizontalAlignment,
  this.hyperlinkDisplayType,
  this.numberFormat,
  this.padding,
  this.textDirection,
  this.textFormat,
  this.textRotation,
  this.verticalAlignment,
  this.wrapStrategy,
});