toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (daysToLookBack != null) 'daysToLookBack': daysToLookBack!,
if (isSmartList != null) 'isSmartList': isSmartList!,
if (kind != null) 'kind': kind!,
if (membershipDurationDays != null)
'membershipDurationDays': membershipDurationDays!,
if (segment != null) 'segment': segment!,
};