Override Default beforeAll() for custom setupMetaMask()?

[defiled]

I want to start each test with a new MetaMask account to test the onboarding flow on my dApp instead of importing/recovering an existing account.

There doesn't seem to be a Synpress command that does this, so I'd like to create one that runs in place of the default setupMetaMask() before my tests run. How do I override this funcitonality?