toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (enableAutoPopulationOfTimespanConfig != null)
'enableAutoPopulationOfTimespanConfig':
enableAutoPopulationOfTimespanConfig!,
if (endTime != null) 'endTime': endTime!,
if (startTime != null) 'startTime': startTime!,
if (timestampField != null) 'timestampField': timestampField!,
};