// before fixer
public readonly ref struct Example(ref int value)
{
    private readonly ref int _value = ref value;
    
    // Use auto-implemented property (RCS1085)
    public int Value
    {
        get => _value;
        set => _value = value;
    }
}

// after fixer
public readonly ref struct Example(ref int value)
{
    // Cannot initialize a by-value variable with a reference (CS8171) and a few other errors
    public int Value { get; set; } = ref value;
}