existingDatabases method
Retrieves the list of all existing databases (availabe or not) https://www.arangodb.com/docs/devel/http/database-database-management.html#list-of-databases
Implementation
Future<ResultResponse<List<String>>> existingDatabases() async {
final response = await _httpGet(['_db', db, '_api', 'database']);
final result = _toResultResponse(response, _toListResult);
return result;
}