const char * c Failed as expected: Tried to call pure virtual function "dispatch" Yay.. [Placeholder[1], Placeholder[2], Placeholder[3], Placeholder[4]] [3, 5, 7, 9, 11, 13, 15] 0==0, 1==1, 2==2, 3==3, 4==4, 5==5, 6==6, 7==7, 8==8, 9==9, Failed as expected: Incompatible function arguments. The following argument types are supported: 1. (example.issues.ElementA) -> NoneType Invoked with: None Failed as expected: Incompatible function arguments. The following argument types are supported: 1. (int) -> int Invoked with: 5.2 12.0