UpExpansionTile constructor
      const
      UpExpansionTile({ 
    
    
- Key? key,
- required List<Widget> children,
- String? title,
- Widget? titleWidget,
- UpColorType? colorType,
- UpStyle? style,
- dynamic onExpansionChanged()?,
- Widget? subtitle,
- Widget? leading,
- Widget? trailing,
- bool maintainState = false,
- bool initiallyExpanded = false,
- ListTileControlAffinity? controlAffinity,
- EdgeInsetsGeometry? childrenPadding,
- EdgeInsetsGeometry? tilePadding,
- CrossAxisAlignment? expandedCrossAxisAlignment,
- Alignment? expandedAlignment,
- UpTextType? textType,
Implementation
const UpExpansionTile({
  Key? key,
  required this.children,
  this.title,
  this.titleWidget,
  this.colorType,
  this.style,
  this.onExpansionChanged,
  this.subtitle,
  this.leading,
  this.trailing,
  this.maintainState = false,
  this.initiallyExpanded = false,
  this.controlAffinity,
  this.childrenPadding,
  this.tilePadding,
  this.expandedCrossAxisAlignment,
  this.expandedAlignment,
  this.textType,
}) : super(key: key);