You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: value.rs
    path of file: ./repos/artichoke/artichoke-backend/src
    
    the code of the file until where you have to start completion: //! Boxed values on the Ruby interpreter heap.

use std::bor
    
    fn to_s_nil() {
        let mut interp = interpreter();

        let value = Value::nil();
        let string = value.to_s(&mut interp);
        assert_eq!(string.as_bstr(), b"".as_bstr());
    }