toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (executionErrors != null) 'executionErrors': executionErrors!,
if (nextPageToken != null) 'nextPageToken': nextPageToken!,
if (timeSeries != null) 'timeSeries': timeSeries!,
if (unit != null) 'unit': unit!,
};