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I’m trying to overwrite the `.contains()` command on `Cypress v12.6.0` with the following requirements:
- search within the parent selector if the command has `prevSubject`, e.g. `cy.get(selector).contains(content)`
- if the command doesn’t have `prevSubject` -> use default selector.

How can I check if `.contains()` has a prevSubject and get its value? 

Thanks in advance!