setServerByName method
Установить адрес сервера по имени (admin/test)
Implementation
Future setServerByName(String name) async {
var newAddress = '';
availableServers.serverGroups.forEach((key, value) {
if (value == name) {
newAddress = key;
}
});
assert(newAddress.isNotEmpty, 'server group $name not found');
saveServerAddress(newAddress);
}