toJson method
Converts an ISO4217Currency instance to a JSON object.
The returned map will contain the same fields as the constructor:
code(String)numCode(int)digits(int)currencyName(String)locationsList String
Implementation
Map<String, dynamic> toJson() {
return {
'code': code,
'num_code': numCode,
'digits': digits,
'currency_name': currencyName,
'locations': locations,
};
}