presetToken property Null safety
@JsonKey(name: 'PresetToken', fromJson: OnvifUtil.mappedToString), final
Implementation
@JsonKey(name: 'PresetToken', fromJson: OnvifUtil.mappedToString)
final String presetToken;
@JsonKey(name: 'PresetToken', fromJson: OnvifUtil.mappedToString)
final String presetToken;