writeObjectRef is not implemented

[bognari]

Hi, when I use my setup from #135 I get this exception:

Caused by: com.fasterxml.jackson.core.JsonGenerationException: No native support for writing Object Ids
	at com.fasterxml.jackson.core.JsonGenerator.writeObjectRef(JsonGenerator.java:1393)
	at com.fasterxml.jackson.databind.ser.impl.WritableObjectId.writeAsId(WritableObjectId.java:37)
	at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase._serializeWithObjectId(BeanSerializerBase.java:615)
	at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:148)
	at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serializeContentsUsing(CollectionSerializer.java:171)
	at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serializeContents(CollectionSerializer.java:116)
	at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serialize(CollectionSerializer.java:107)
	at com.fasterxml.jackson.databind.ser.std.CollectionSerializer.serialize(CollectionSerializer.java:25)
	at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:727)
	at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:719)
	at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase._serializeWithObjectId(BeanSerializerBase.java:631)
	at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:148)
	at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider._serialize(DefaultSerializerProvider.java:480)
	at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:319)
	at com.fasterxml.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:3905)
	at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsBytes(ObjectMapper.java:3243)
	at org.litote.kmongo.jackson.JacksonCodec.encode(JacksonCodec.kt:185)

because KMongoBsonGenerator does not implement the method writeObjectRef from JsonGenerator.

[zigzago]

Thanks for reporting. The fix is in the snapshot.