TimeRegionBuilder typedef
        TimeRegionBuilder =
     Widget Function(BuildContext context, TimeRegionDetails timeRegionDetails)
    
    
Signature for a function that creates a widget based on time region details.
See also:
- SfCalendar.timeRegionBuilder, which matches this signature.
- SfCalendar, which uses this signature in one of it's callback.
Implementation
typedef TimeRegionBuilder =
    Widget Function(BuildContext context, TimeRegionDetails timeRegionDetails);