toJson method
Serializes the boolean value to JSON format.
Returns the raw boolean value, which may be null if no value has been
set. This allows the JSON representation to distinguish between an
explicitly set false value and an unset (null) value.
Returns:
The boolean value (true or false), or null if no value has been set.
Example:
final field = JsonBoolean('active');
print(field.toJson()); // null
field.value = false;
print(field.toJson()); // false
Implementation
@override
bool? toJson() {
return rawValue;
}