Gatling 2.2 - custom DataWriters?


I’m trying to upgrade from 2.1.x to 2.2.x and one feature that seems to have disappeared is the ability to implement a custom DataWriter.

I understand that the api used is somewhat private and has gone through a refactoring in the latest release.

What I am more interested in is the the fact that I used to be able to add a custom class into the data.writers section of gatling.conf and have my implementation initialised at runtime.

As far as I can tell this capability has now disappeared and only the types defined by DataWriterType are available.

Am I missing something? Is there another way to achieve this goal?