public virtual Result <LocalDateDoubleTimeSeries> provideTimeSeries(ObservableId id)
 {
     return(Result.success(LocalDateDoubleTimeSeries.empty()));
 }
 public virtual Result <LocalDateDoubleTimeSeries> provideTimeSeries(ObservableId id)
 {
     return(Result.failure(FailureReason.MISSING_DATA, "No time-series provider configured, unable to provide time-series for '{}'", id));
 }