toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (adId != null) 'adId': adId!,
if (clickTag != null) 'clickTag': clickTag!,
if (creativeId != null) 'creativeId': creativeId!,
if (format != null) 'format': format!,
if (impressionTag != null) 'impressionTag': impressionTag!,
};