Converting to vector tile formats

I’ve been looking into your vector tiling recently, and the sandcastle examples provided seem to use .vctr file formats. I’m wondering how I would go about converting my vector files (kml) to this tiled vctr format.

Welcome to the Cesium community!

If you have a kml file, you can upload it to Cesium ion and host it there or convert it to 3D Tiles for free! (as long as the file size is less than 5GB). For a guide on how to get started with Cesium ion, please check out our Quick Start Guide.

I am aware of this feature, however this does not allow tiling of VECTOR kml files, it only supports tiling kml files with models in them. I know your vector tiling is still a work in progress, which is why its not supported yet, so I am wondering how these new .vctr tiles are created internally?