[Issue 10979] Add trait for function callgraph extraction, to allow "builtin attribute"-style UDA semantic checks

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=10979

--- Comment #9 from dlangBugzillaToGithub <robert.schadek at posteo.de> ---
THIS ISSUE HAS BEEN MOVED TO GITHUB

https://github.com/dlang/dmd/issues/18665

DO NOT COMMENT HERE ANYMORE, NOBODY WILL SEE IT, THIS ISSUE HAS BEEN MOVED TO
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