buildToJson method
Implementation
Future<void> buildToJson(ClassDeclaration clazz, MemberDeclarationBuilder builder) async {
builder.declareInType(DeclarationCode.fromString(asCode("""
/// Converts [${clazz.identifier.name}] object to a json string.
String toJson({bool pretty = false}) => Model.jsonEncode(toMap(), pretty: pretty);
""")));
}