private void EmptyParentProductGroupOfFilterByParentProductGroups(Connector connector)
{
log.DebugFormat("");
log.DebugFormat("------> Start Empty Parent Product Groups of Filter By Parent Product Groups");
List <MasterGroupMapping> listOfProductGroups = filterByParentProductGroupService.GetListOfProductGroupsWithFilterByParent(connector);
var listOfParentProductGroups = listOfProductGroups.Where(x => x.ParentMasterGroupMappingID != null).Select(x => x.ParentMasterGroupMappingID).Distinct();
listOfParentProductGroups.ForEach(masterGroupMappingID =>
{
masterGroupMappingRepo.DeleteProductsByMasterGroupMappingID(masterGroupMappingID.Value);
});
}