transactions method
Gets currently running transactions https://www.arangodb.com/docs/stable/http/transaction-stream-transaction.html#list-currently-ongoing-transactions
Implementation
Future<List<Transaction>> transactions() async {
final answer = await _httpGet(['_db', db, '_api', 'transaction'])
as Map<String, dynamic>;
final trxs = answer['transactions'] as List<Map<String, dynamic>>;
final lst = trxs.map((e) => _getTransaction(e)).toList();
return lst;
}