async getVoicePackOperationStatus() {
        // Voice pack operation status is returned via events.
        // Since the capability mechanism doesn't support events and
        // I didn't find a get_properties way to retrieve it, it's unsupported (for now?) and will always return IDLE

        const statusOptions = {
            type: ValetudoVoicePackOperationStatus.TYPE.IDLE,
            progress: undefined
        };

        return new ValetudoVoicePackOperationStatus(statusOptions);
    }
This method should return the status of the current voice pack operation, if one is ongoing.

@returns {Promise<ValetudoVoicePackOperationStatus>}