An instanced version of [page:BufferGeometry].
See [page:BufferGeometry] for inherited properties.
Default is `Infinity`.
Read-only flag to check if a given object is of type [name].
See [page:BufferGeometry] for inherited methods.
Copies the given [name] to this instance.
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]