Support Classification, Intensity, etc in Cesium 3D tiles

Related products: FME Form

As noted here, it would be nice to have the ability to write additional components such as Classification, Intensity etc, with our Cesium writer.

Has anyone found a workaround for creating PNTS so that examples like this in the Sandcastle can be created? https://sandcastle.cesium.com/index.html?src=3D%20Tiles%20Formats.html