def METHOD_NAME(self):
    rc_type_tax_model = self.env["account.rc.type.tax"]
    self.rc_type_tax_ita = rc_type_tax_model.create(
        {
            "rc_type_id": self.rc_type_ita.id,
            "purchase_tax_id": self.tax_22ai.id,
            "sale_tax_id": self.tax_22vi.id,
        }
    )