@Override
    public void updateLast(Schema<?> schema, Schema<?> lastSchema)
    {

        if (lastSchema != null && lastSchema == this.schema)
        {
            this.schema = schema;
        }

    }
Output is using to write data in message pack format.

@author Alex Shvid
protostuff-msgpack/src/main/java/io/protostuff/MsgpackOutput.java