toJson method
Implementation
@override
Map<String, dynamic> toJson([dynamic extra]) {
return {
"@type": CONSTRUCTOR,
"total_count": totalCount,
"topics": topics.map((i) => i.toJson()).toList(),
"next_offset_date": nextOffsetDate,
"next_offset_message_id": nextOffsetMessageId,
"next_offset_message_thread_id": nextOffsetMessageThreadId,
};
}