@Obolrom do you already have some ideas about the bug fix or do you need me to have a look at it as well?

@filiphr, I am trying to figure out how to fix the bug properly.
As I understand we should do something around these properties

private Map<String, Accessor> unprocessedConstructorProperties;
private Map<String, Accessor> unprocessedTargetProperties;
private Map<String, Accessor> unprocessedSourceProperties;
private Set<String> missingIgnoredSourceProperties;

in the BeanMappingMethod class.

My first attempt to fix it led to 200 failed tests. So, I would appreciate any hint

@Obolrom, I believe that it is somewhere in the BeanMappingMethos.Builder#createSubclassMapping. Or more specifically in forgeSubclassMapping. I think that we are not passing all the information from the BeanMapping into the forged methods, but looking at the code it should work. Perhaps it is best if I look into it, no need to waste on time on this.

@Obolrom did my hint help you out a bit? If not, I'll take over and do the fix.

@filiphr by some reason it doesn't work anyway. Could you please take a look?

Thanks @Obolrom and @thunderhook for working on this.

@thunderhook I was not too happy with the fix. I changed it a bit. Have a look at how it looks like, I prefer when things are a bit more explicit than having something special in the generic method.

@Obolrom, I reduced the test case a bit to only cover what the actual bug is and reduce the complexity of it.