boost::optional<IdfObject> ForwardTranslator::translateDaylightingDeviceShelf( model::DaylightingDeviceShelf & modelObject )
{
  IdfObject idfObject(openstudio::IddObjectType::DaylightingDevice_Shelf);

  m_idfObjects.push_back(idfObject);

  idfObject.setString(DaylightingDevice_ShelfFields::Name, modelObject.name().get());

  OptionalString s = modelObject.getString(OS_DaylightingDevice_ShelfFields::WindowName, false, true);
  if (s){
    idfObject.setString(DaylightingDevice_ShelfFields::WindowName, *s);
  }else{
    LOG(Error, "Missing required input 'Window Name' for DaylightingDevice:Shelf named '" << modelObject.name().get() << "'");
  }

  // TODO: make sure inside shelf is converted to a surface
  s = modelObject.getString(OS_DaylightingDevice_ShelfFields::InsideShelfName, false, true);
  if (s){
    idfObject.setString(DaylightingDevice_ShelfFields::InsideShelfName, *s);
  }

  s = modelObject.getString(OS_DaylightingDevice_ShelfFields::OutsideShelfName, false, true);
  if (s){
    idfObject.setString(DaylightingDevice_ShelfFields::OutsideShelfName, *s);
  }

  // TODO: map construction from shading surface
  s.reset();
  if (s){
    idfObject.setString(DaylightingDevice_ShelfFields::OutsideShelfConstructionName, *s);
  }

  OptionalDouble d = modelObject.getDouble(OS_DaylightingDevice_ShelfFields::ViewFactortoOutsideShelf, false);
  if (d){
    idfObject.setDouble(DaylightingDevice_ShelfFields::ViewFactortoOutsideShelf, *d);
  }

  return boost::none;
}