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: informational.rs
    path of file: ./repos/rustsec/rustsec/src/advisory
    
    the code of the file until where you have to start completion: //! Informational advisories: ones which don't represent an immediate security
//! threat, but something users of a crate should be warned of/aware of

use cra
    
    fn from_str(s: &str) -> Result<Self, Error> {
        Ok(match s {
            "notice" => Self::Notice,
            "unmaintained" => Self::Unmaintained,
            "unsound" => Self::Unsound,
            other => Self::Other(other.to_owned()),
        })
    }