| Snapshot reference from which to base the clone.
If this parameter is set, the clone is based off of the snapshot point. This means that the newly created virtual machine will have the same configuration as the virtual machine at the time the snapshot was taken.
If this property is not set then the clone is based off of the virtual machine's current configuration.
Setting this is only supported if the host this virtual machine is currently residing on supports cloning from a snapshot point. Such support does not need to exist on the destination host for the clone.
Setting this is only supported if the virtual machine supports reporting snapshot configuration information. See snapshotConfigSupported. Such support does not need to exist on the destination host for the clone.Since vSphere API 4.0