PrimaryInteropAssemblyAttribute.cs

namespace System.Runtime.InteropServices
{
    [AttributeUsage(AttributeTargets.Assembly, Inherited = false, AllowMultiple = true)]
    [ComVisible(true)]
    public sealed class PrimaryInteropAssemblyAttribute : Attribute
    {
        internal int _major;

        internal int _minor;

        public int MajorVersion => _major;

        public int MinorVersion => _minor;

        public PrimaryInteropAssemblyAttribute(int major, int minor)
        {
            _major = major;
            _minor = minor;
        }
    }
}