I am trying to create a list by using the fields in two object using map struct. Its creating the new list successfully with all the fields but i am losing all the values in the objects. I am using map struct 1.5.5 Final and not using lombok for getter and setter. Please help me to find out what i am missing.

public static void main(String[] args) {
 FhExtra fhExtra = new FhExtra();
 fhExtra.setLoanNumber("123456");
 fhExtra.setFILoanNumber("896");
 FhExtraImportResults extraImportResults1 = new FhExtraImportResults();
 extraImportResults1.setLoanId(56L);
 extraImportResults1.setRecord(fhExtra);
 List<FhExtraImportResults> extraImportResults = new ArrayList<>();
 extraImportResults.add(extraImportResults1);

 FhListItemMapper mapper = Mappers.getMapper(FhListItemMapper.class);
 List<FhlbExtraCsv> newList = extraImportResults.stream().map(mapper::map).toList();
 // newList  is having all the fields but dont have the values i set.
 }



 @Mapper
 public interface FhListItemMapper {
 @Mapping(target = "loanId", source = "results.loanId")
 @Mapping(target = "error", source = "results.error")
 FhlbExtraCsv map(FhlbExtraImportResults results);
 }


 public class FhExtra {
 String LoanNumber;
 String FILoanNumber;
 }

 public class FhlbExtraImportResults {
 FhExtra record;
 String error;
 Long loanId;
 }

 public class FhlbExtraCsv {
 String LoanNumber;
 String FILoanNumber;
 String error;
 Long loanId;
 }

Expected output is like

[{
 LoanNumber : 123456
 FILoanNumber : 896
 error : null
 loanId : 56
}]