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: users.rs
    path of file: ./repos/backend/crates/core/models/src/v0
    
    the code of the file until where you have to start completion: use once_cell::sync::Lazy;
use regex::Regex;

use super::File;

/// Regex for valid usernames
///
/// Block zero width space
/// Block lookalike characters
pub static 
    
    fn with(&self, user: &str) -> RelationshipStatus {
        for entry in self {
            if entry.user_id == user {
                return entry.status.clone();
            }
        }

        RelationshipStatus::None
    }