toJson method

@override Map<String, dynamic> toJson()

Serialize to the JSON shape /ad_requests expects.

Implementation

@override
Map<String, dynamic> toJson() => {
  'type': 'conversation',
  'question': question,
  if (answer != null) 'answer': answer,
  if (externalConversationId != null)
    'external_conversation_id': externalConversationId,
};