case containsVolumeMode(csiDriver.Spec.VolumeLifecycleModes, c.volumeLifecycleMode):
		// Explicitly listed.
		return nil
	default:
		return fmt.Errorf("volume mode %q not supported by driver %s (only supports %q)", c.volumeLifecycleMode, driver, csiDriver.Spec.VolumeLifecycleModes)
	}
}

// containsVolumeMode checks whether the given volume mode is listed.

			csiMounter.csiClient = csiClient
			var mounterArgs volume.MounterArgs
			mounterArgs.FsGroup = fsGroup
			err = csiMounter.SetUp(mounterArgs)
			if test.isInline && (test.driverSpec == nil || !containsVolumeMode(test.driverSpec.VolumeLifecycleModes, storage.VolumeLifecycleEphemeral)) {
				// This *must* fail because a CSIDriver.Spec.VolumeLifecycleModes entry "ephemeral"
				// is required.
				if err == nil {