A public entity is exempt from filing a bond or undertaking. (CCP 995.220) If the creditor is a public entity exempt from giving an undertaking, the public entity shall, in lieu of filing the undertaking, file with the levying officer a notice stating that the public entity opposes the claim of the third person. When so filed, the notice is deemed to satisfy the requirement of this section that an undertaking be filed. (CCP 720.160(d), 720.260(d))