Overriding the withdrawRelayHubDepositTo

For my application I’m needing to disallow anyone from withdrawing ether out of our paymaster. It doesn’t seem like there is a way to override the non virtual BasePaymaster.withdrawRelayHubDepositTo function.
Is there another way to accomplish this short of copying the BasePaymaster into my project and manually setting the withdraw function to virtual?

The withdrawRelayHubDepositTo() method is protected by “ownerOnly”, so only you can withdraw the funds, not everyone.