The generated method (and it existence in the method map) has another purpose: it allowshas() to know about the service, and means thatget('kernel') gives you a meaningful message if it is not set yet (same for other synthetic services).

@stof, yes, and my point is that we don't care, because these are erroneous situations anyway. The fact the current behavior prevents meaningful progress largely wins over the small&rare DX+ that it provides.
For "has", I don't expect anyone to rely on a faulty behavior (userland side) anyway :)

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@stof no blocker for you? I'd like to merge to unlock progress in#19668.

It makes sense right? Ie. we donthavekernel till it's set.has() returning true, whileget() throws is weird..

Imo. the exception is even better now, service not found.

What if an alias refers a pre-defined service? I thinkhas() needs an update so that$id is set first, and continue checks based on the aliased id (basically whatget() does).

@ro0NL updated, was that what you meant?

Yep 👍

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Thank you@nicolas-grekas.