public TimeSeries(int capacity)
 {
     _values = new List<double>(new double[capacity]);
     MetaData = new TimeSeriesMetaData();
 }
 public TimeSeries()
 {
     _values = new List<double>();
     MetaData = new TimeSeriesMetaData();
 }
 // private readonly TimeSeriesMetaData _metaData = new TimeSeriesMetaData();
 public TimeSeries(IList<double> data)
 {
     _values = data;
     MetaData = new TimeSeriesMetaData();
 }