def METHOD_NAME(self):
    super(Wizard, self).METHOD_NAME()
    self.sale_order_id = self.env.ref("sale.sale_order_3")
    self.cfg_tmpl = self.env.ref("product_configurator.bmw_2_series")
    self.cfg_wizard = self.env["product.configurator.sale"].create(
        {
            "product_tmpl_id": self.cfg_tmpl.id,
            "order_id": self.sale_order_id.id,
            "user_id": SUPERUSER_ID,
        }
    )
    self.cfg_session = self.cfg_wizard.config_session_id
    self.attr_vals = self.cfg_tmpl.attribute_line_ids.mapped("value_ids")
    self.attr_val_ext_ids = {
        v: k for k, v in self.attr_vals.get_external_id().items()
    }