toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (campaignEndTimeMillis != null)
'campaignEndTimeMillis': campaignEndTimeMillis!,
if (campaignId != null) 'campaignId': campaignId!,
if (campaignName != null) 'campaignName': campaignName!,
if (campaignStartTimeMillis != null)
'campaignStartTimeMillis': campaignStartTimeMillis!,
if (experimentPayload != null) 'experimentPayload': experimentPayload!,
};