@Test
    void testPropagateNullOnNestedCtorWithPrefixSnakeCase() {
        propagateNullOnNestedColumn(q -> q.map(ConstructorMapper.of(Test12Bean.class)));
    }
Test that the propagateNull annotation on a nested bean works. The nested bean has a prefix and the column in the nested bean has no special name. The
value in the result set is prefixed using the bean prefix. Use the snake_case mapper (parses prefixes)
core/src/test/java/org/jdbi/v3/core/mapper/PropagateNullTest.java