clearPreset method
Implementation
Future<Map<String, dynamic>> clearPreset(
String deviceSerial,
int channelNo, {
required int presetIndex,
}) async {
// Assuming endpoint based on API structure for other preset commands
// Actual endpoint from docs: /api/lapp/device/preset/clear
return _ptzControl(
'/api/lapp/device/preset/clear',
deviceSerial,
channelNo,
{'index': presetIndex},
);
}