toMap method Null safety
Implementation
Map<String, dynamic> toMap(Map<String, dynamic> map) {
return {
'sender': sender,
'message': message,
'type': type,
'time': time,
};
}
Map<String, dynamic> toMap(Map<String, dynamic> map) {
return {
'sender': sender,
'message': message,
'type': type,
'time': time,
};
}