What if my constructor initializes only a subset of required properties?

[voroninp]

I can use SetsRequiredMembersAttribute to indicate that my constructor initializes required properties.
But what if it initializes only a subset, and remaning required properties still must be explicitly initialized.

[huoyaoyuan]

This is a language design question and should go to https://github.com/dotnet/csharplang repo.

Detailed declaration of which members are set was discussed, and not included in this feature.