"Happy to help, are there any of the technical details you specifically need my eyes on? Otherwise, I trust your judgement." Are you being approached because y

"Happy to help, are there any of the technical details you specifically need my eyes on? Otherwise, I trust your judgement." Are you being approached because you are the only only around who actually remember working on the Foo Widget and the team wants to make sure they're not breaking something subtle, or are they implicitly coming to you for permission to trespass on your territory? Former situation, you do the code review as a techie (and remember to commend the team for finally getting around to tackling the badness in the Foo Widget), for the latter situation you trust their judgement.