def get_model_url(self, object, kind, shop=None):
     if isinstance(object, Product):
         if not shop:
             try:
                 shop = object.shop_products.first().shop
             except ObjectDoesNotExist:
                 return None
         object = object.get_shop_instance(shop)
     return derive_model_url(ShopProduct, "shuup_admin:shop_product", object, kind)

 def get_model_url(self, object, kind):
     return derive_model_url(DisplayUnit, "shuup_admin:display_unit", object, kind)

 def get_model_url(self, object, kind):
     return derive_model_url(Category, "shuup_admin:category", object, kind)

 def get_model_url(self, object, kind):
     return derive_model_url(Script, "shuup_admin:notify.script", object, kind)

 def get_model_url(self, object, kind):
     return derive_model_url(Manufacturer, "shuup_admin:manufacturers", object, kind)

 def get_model_url(self, object, kind):
     return derive_model_url(Order, "shuup_admin:order", object, kind)

 def get_model_url(self, object, kind):
     return derive_model_url(get_user_model(), "shuup_admin:user", object, kind)

 def get_model_url(self, object, kind, shop=None):
     return derive_model_url(Snippet, "shuup_admin:xtheme_snippet", object, kind)

 def get_model_url(self, object, kind):
     return derive_model_url(Supplier, "shuup_admin:supplier", object, kind)

 def get_model_url(self, object, kind):
     return derive_model_url(Page, "shuup_admin:simple_cms.page", object, kind)

 def get_model_url(self, object, kind, shop=None):
     return derive_model_url(AvailabilityException, "shuup_admin:discounts_availability_exception", object, kind)

 def get_model_url(self, object, kind, shop=None):
     return derive_model_url(Discount, "shuup_admin:discounts", object, kind)

 def get_model_url(self, object, kind):
     return (
         derive_model_url(Tax, "shuup_admin:tax", object, kind) or
         derive_model_url(TaxClass, "shuup_admin:tax_class", object, kind) or
         derive_model_url(CustomerTaxGroup, "shuup_admin:customer_tax_group", object, kind)
     )

 def get_model_url(self, object, kind):
     return derive_model_url(TaxRule, "shuup_admin:default_tax.tax_rule", object, kind)

 def get_model_url(self, object, kind):
     return derive_model_url(self.model, self.url_name_prefix, object, kind)

 def get_model_url(self, object, kind):
     return derive_model_url(Carousel, "shuup_admin:carousel", object, kind)

 def get_model_url(self, object, kind):
     if not hasattr(object, "admin_url_suffix"):
         return super(CampaignAdminModule, self).get_model_url(object, kind)
     admin_url = "shuup_admin:%s" % object.admin_url_suffix
     return derive_model_url(type(object), admin_url, object, kind)

 def get_model_url(self, object, kind):
     return derive_model_url(Product, "shuup_admin:product", object, kind)

 def get_model_url(self, object, kind, shop=None):
     return derive_model_url(Task, "shuup_admin:task", object, kind)