may be "Owned", "Shared", "Controlled" or "OEMShared". Entries reported as "Shared" may be reported as "Controlled" or "OEMShared" in future; consumers that branch on this value should handle all four. The relationships returned may in future depend on the device type of the queried serial: a GO device with an OEMShared relationship will return only those entries (no "Owned" entry), and a non-GO device (CVaaS, virtual) will never return OEMShared entries.