Note regarding the new-api-needs-documentation label:

This serves as a reminder for when your PR is modifying a ref *.cs file and adding/modifying public APIs, to please make sure the API implementation in the src *.cs file is documented with triple slash comments, so the PR reviewers can sign off that change.

I couldn't figure out the best area label to add to this PR. If you have write-permissions please help me learn by adding exactly one area label.

    public static ObjectHandle? CreateInstance(string assemblyName, string typeName)

I don't think these CreateInstance(string, string) overloads are public in the ref file, but would it be possible to annotate them as well while we are in here?

Refers to: src/libraries/System.Private.CoreLib/src/System/Activator.RuntimeType.cs:42 in d9ba474. [](commit_id = d9ba474, deletion_comment = False)

    public static ObjectHandle? CreateInstance(string assemblyName, string typeName)

Oh, I was looking in the wrong spot - they are public:

        public static System.Runtime.Remoting.ObjectHandle? CreateInstance(string assemblyName, string typeName) { throw null; }
        public static System.Runtime.Remoting.ObjectHandle? CreateInstance(string assemblyName, string typeName, bool ignoreCase, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder? binder, object?[]? args, System.Globalization.CultureInfo? culture, object?[]? activationAttributes) { throw null; }
        public static System.Runtime.Remoting.ObjectHandle? CreateInstance(string assemblyName, string typeName, object?[]? activationAttributes) { throw null; }

In reply to: 845998773

Refers to: src/libraries/System.Private.CoreLib/src/System/Activator.RuntimeType.cs:42 in d9ba474. [](commit_id = d9ba474, deletion_comment = False)

Oh, I was looking in the wrong spot - they are public:

Those are also illink intrinsics, so it's not a hole, but I fixed those and filed #53121 for the other cases. We should go over them.