toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (explicitMarketingPreference != null)
'explicitMarketingPreference': explicitMarketingPreference!,
if (lastUpdatedTimestamp != null)
'lastUpdatedTimestamp': lastUpdatedTimestamp!,
if (marketingEmailAddress != null)
'marketingEmailAddress': marketingEmailAddress!,
};