writeToMapFunc method
Implementation
String writeToMapFunc(ClassElement e) {
final buf = StringBuffer();
buf.writeln('Map<String, dynamic> $toMapFuncName($className instance, _) => <String, dynamic>{');
for (final field in e.fields) {
buf.writeln("'${camelToSnake(field.name)}': instance.${field.name},");
}
buf.writeln('};');
return buf.toString();
}