Ensure that every command has setFlags and hasWrapper functions #3105
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Summary
This pull request is a simplified version of #2810 and maybe for some ways better because it prefers composition over inheritance and it is less invasive right now.
There are two commits that ensure that we always have setFlags and hasWrapper functions.
This is the first step to move some responsabilities from the index towards the command classes.
Test plan
For what I see every command is covered, but let me know if I have to cover something.