Chooses the KV key a LabJack configuration is saved under.
A configuration lives at <site>.<box>.<source>.config (see labjackConfigKey).
When an edit changes the site, box or source, the configuration must move to the key
of its new identity; otherwise the stored key and the content disagree.
Chooses the KV key a LabJack configuration is saved under.
A configuration lives at
<site>.<box>.<source>.config(seelabjackConfigKey). When an edit changes the site, box or source, the configuration must move to the key of its new identity; otherwise the stored key and the content disagree.