private void CreateDataFile(
List <OmniDataFileLineModel> models,
string fullFilePath)
{
var flatFile = new FlatFile <OmniDataFileLineModel>(_flatFileIo);
flatFile
.SetDelimiter("|")
.AddColumn(c => c.InvestmentVehicleId, o => o.Heading("Investment Vehicle Id"))
.AddColumn(c => c.Type)
.AddColumn(c => c.Name)
.AddColumn(c => c.FeeType, o => o.Heading("Fee Type"))
.AddColumn(c => c.Duration)
.AddColumn(c => c.EndDate, o => o.Heading("End Date"))
.AddColumn(c => c.ReturnValue, o => o.Heading("Return Value"))
.WriteFile(fullFilePath, models.ToArray());
}