mesh-3d radius and buffer-size

[bcasu]

I am trying to add a scene layer with a 3D sphere to ArcGIS JS 4. I am getting 'radius not found' and invalid buffer-size in the console. I cannot find an example of where to set the radius and buffer-size of the multipatch. Is it in the renderer? 

var globeRenderer = {
type: "simple", // autocasts as new SimpleRenderer()
symbol: {
type: "mesh-3d", // autocasts as new MeshSymbol3D()
symbolLayers: [{
type: "fill", // autocasts as new FillSymbol3DLayer()
material: {
color: "#54FB00"
},
}]
}
};