class UnsupportedFeatureException extends CnicException (View source)

Thrown when a capability is not available on the current platform or response.

Some operations exist on the shared contract but are not offered by every brand — e.g. the IBS/Moniker platform has no API session, user roles, high performance connection setup, queue/runtime metrics, temporary-error or pending states, and no server-side list-hash. Calling such a method raises this exception instead of returning a misleading value.