toJson method
Implementation
Map<String, dynamic> toJson() {
return {
if (registration != null) 'registration': registration,
if (instructor != null) 'instructor': instructor!.toJson(),
if (platform != null) 'platform': platform,
if (contextActivities != null)
'contextActivities': contextActivities!.toJson(),
if (extensions != null) 'extensions': extensions,
if (language != null) 'language': language,
if (revision != null) 'revision': revision,
};
}