Gets the value of the given Nomad "variable".
A variable can be any piece of info about Nomad such as a registry setting or even some computed value based on the current state of Nomad. This API is meant to be a flexible way of getting info out from Nomad which can be extended in future without breaking any COM interfaces. Currently the following three are the only supported variables:
Get the current value of Nomad setting “SSDEnabled”:
Requires Nomad v6.3.200 or later.
Available from Tachyon v3.2.