Unable to Serialize null field

[dkpalmer]

I have a need to serialize a null field. When I mark the field as @Nullable, I see the GsonTypeAdapter write(JsonWriter, Object) method wrap the field adapter's write() call in a null check. But if I remove @Nullable, my builder/factory methods complain about the null value. Is there any way around this?

It looks like 23 could be related?

For clarity, I am calling serializeNulls in my GsonBuilder. Perhaps the write method's GsonTypeAdapter could check that flag in the JsonWriter to bypass the above mentioned null check?

[ZacSweers]

Closed by #78