toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (dateTime != null) 'dateTime': dateTime!,
if (healthRecommendations != null)
'healthRecommendations': healthRecommendations!,
if (indexes != null) 'indexes': indexes!,
if (pollutants != null) 'pollutants': pollutants!,
};