setPostambleFromKeys abstract method
- required String deviceId,
 - required List<
DirectInputKey> keys, 
Sets the postamble formatting using a list of DirectInputKey.
deviceId - The identifier of the target device.
keys - A list of DirectInputKey values for the postamble, with a maximum length of 8.
Returns a CommandResponse indicating the success or failure of the operation.
Implementation
Future<CommandResponse> setPostambleFromKeys(
    {required String deviceId, required List<DirectInputKey> keys});