If I have a getter/setter pair like
public long get07()
and
public void set07(long _07)
I don't see any way to make these serialize and deserialize using the POJO support.
Adding @BsonProperty("07") has no effect at all and the field is simply ignored completely.
The only way I found was to add another pair of getter/setter that has some name that is recognized as property and then use the annotation to configure the name.

Imho adding the annotation to a paramterless getter should be enough to make it serialize.