There is one more patch series of refactoring create_key() after this one, then I can start implementing things.
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v2: kernelbase: Return the last existing key from open_key() when it's called from create_key().
kernelbase: Pass a name pointer to open_key().
kernelbase: Use open_key() to obtain any existing Wow6432node in create_key().
kernelbase: Call open_key() from open_subkey().
advapi32/tests: Copy Software\Classes tests from ntdll.
https://gitlab.winehq.org/wine/wine/-/merge_requests/2445