'Declaration
 
Public Shared Function FillForecast( _
   ByVal etsModel As IEtsModel, _
   ByVal historicalCount As Integer, _
   ByVal forecastStart As Double, _
   ByVal forecastEnd As Double, _
   ByVal forecastSheet As IWorksheet, _
   ByVal seasonality As Integer, _
   ByVal dataCompleteMode As Integer, _
   ByVal confidenceInterval As Double, _
   ByVal isLineChart As Boolean, _
   ByVal timelineFmt As NumberFormat, _
   ByVal valueFmt As NumberFormat, _
   ByVal timelineHeader As String, _
   ByVal valueHeader As String, _
   ByVal includeStatistic As Boolean, _
   Optional ByVal formatAsTable As Boolean, _
   Optional ByVal refillModel As Boolean, _
   Optional ByVal refillForecast As Boolean, _
   Optional ByVal refillConfidenceInterval As Boolean _
) As ActionResult(Of Object)