run method
Runs this command.
The return value is wrapped in a Future if necessary and returned by
CommandRunner.runCommand.
Implementation
@override
void run() async {
  await initializeOnvif();
  try {
    await ptz.zoom(argResults!['profile-token'],
        Vector1D.fromString(x: argResults!['zoom']));
  } on DioException catch (err) {
    throw UsageException('API usage error:', err.usage);
  }
}