toJson method

@override Map<String, dynamic> toJson([ dynamic extra ])

Implementation

@override
Map<String, dynamic> toJson([dynamic extra]) {
  return {
    "@type": CONSTRUCTOR,
    "invoice_chat_id": invoiceChatId,
    "invoice_message_id": invoiceMessageId,
    "currency": currency,
    "total_amount": totalAmount,
  };
}