chatAvatar property
        
        Widget? Function({String? name, required bool online, Color? rimColor, double? size, required String url})?
        chatAvatar
        
      
final
      property to be set internally by using passed parameters usersProtocol ,selectionMode ,options these are passed to the CometChatUsersController which is responsible for the business logic CUSTOM WIDGETS
Implementation
/// CUSTOM WIDGETS
 final Widget? Function({
  required String url,
  String? name,
  required bool online,
  double? size,
  Color? rimColor,
})? chatAvatar;