getOr method
Gets a value by name from the underlying config map, or the fallback
if the underlying map does not contain the name.
Implementation
String getOr(String name, {required String fallback}) {
if (!_env.containsKey(name) &&
!_augments.values.any((m) => m.containsKey(name))) {
return fallback;
}
return _env[name] ??
_augments.values.firstWhere((m) => m.containsKey(name))[name]!;
}