public IEnumerable <CurveRange> MetadataRequestVersioned(string curveId, string provider, LocalDateTime start, LocalDateTime end)
{
Console.WriteLine("Requesting versioned metadata...");
var _cfg = _config(provider);
var mds = new MetaDataService(_cfg);
var numVersions = mds.ReadCurveRangeAsync(Convert.ToInt32(curveId), 1, 1, null, start, end).Result; // Get number of available curves.
var versions = mds.ReadCurveRangeAsync(Convert.ToInt32(curveId), 1, Convert.ToInt32(numVersions.Count), null, start, end).Result.Data;
//Console.WriteLine("Versions");
//foreach (var v in versions)
//{
// Console.WriteLine(v.Version);
//}
//Console.WriteLine("Total : " + versions.Count());
return(versions);
}