Typing does not seem to be updated to be aligned with the current API and SDK version.

It seems that not all the types are defined correctly.  
Per example, [this type](https://github.com/messagebird/messagebird-nodejs/blob/master/types/conversations.d.ts#L318-L321) does not correspond to [this example](https://github.com/messagebird/messagebird-nodejs/blob/master/examples/conversations.js#L44-L54).

Am I missing something? Or are they currently not updated?