toJson method
Implementation
Map<String, dynamic> toJson() {
return {
'to': to,
'fee': fee.toJson(),
'memo': memo,
'from_subaccount': fromSubAccount != null ? [fromSubAccount] : [],
'created_at_time': createdAtTime != null ? [createdAtTime!.toJson()] : [],
'amount': amount.toJson(),
}..removeWhere((key, value) => value == null);
}