Inheritance: extends Illuminate\Database\Eloquent\Model
 public function createPastHistory($item)
 {
     $his = ItemHistory::newInstance();
     $his->item_id = $item->id;
     $his->user_id = $item->user_id;
     $his->open_item_id = $item->open_item_id;
     $his->title = $item->title;
     $his->body = $item->body;
     $his->published = $item->published;
     $his->created_at = $item->created_at;
     $his->updated_at = $item->updated_at;
     $his->save();
     return $his;
 }