toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (gclid != null) 'gclid': gclid!,
if (utmCampaign != null) 'utmCampaign': utmCampaign!,
if (utmContent != null) 'utmContent': utmContent!,
if (utmMedium != null) 'utmMedium': utmMedium!,
if (utmSource != null) 'utmSource': utmSource!,
if (utmTerm != null) 'utmTerm': utmTerm!,
};