toJson property
Callback that exposes the current state and returns a String representation of the state.
If it is not defined,it will be inferred form primitive:
- int: (int s)=> '$s';
- double: (double s)=> '$s';
- String: (String s)=> '$s';
- bool: (bool s)=> s? '1' : '0';
If it is not defined and the model is not primitive, it will throw and ArgumentError.
Implementation
String Function(T s)? toJson;