public static IConfigurationBuilder Add(this IConfigurationBuilder @this, string path, bool optional = false,
bool reloadonChange = false)
{
path = Path.GetFullPath(Path.ChangeExtension(path, ""));
var xml = @this.TryAddFile(path + ".xml", optional, reloadonChange);
var json = @this.TryAddFile(path + ".json", optional, reloadonChange);
var ini = @this.TryAddFile(path + ".ini", optional, reloadonChange);
Assert.Any($"No xml, json or ini file added for {path}", xml, json, ini);
return(@this);
}