Is it possible to reply to inline comment using conduit?

VSCode has a set of APIs that let you implement inline commenting UI from a vscode extension. (See https://github.com/microsoft/vscode-extension-samples/tree/master/comment-sample).

I’m trying to implement a vscode extension to do Phabricator code reviews with my editor. I was looking for a Conduit API that would let me reply to comments. I noticed the differential.createinline API but that only seems to create new comment threads. Does anyone know how to reply to inline comments using Conduit? It would be great if differential.createinline could accept a comment PHID as an optional argument.

There’s currently no way to reply to an inline comment via the API.