toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (displayName != null) 'displayName': displayName!,
if (geoRegionType != null) 'geoRegionType': geoRegionType!,
if (negative != null) 'negative': negative!,
if (targetingOptionId != null) 'targetingOptionId': targetingOptionId!,
};