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: mod.rs
    path of file: ./repos/hash/libs/@blockprotocol/type-system/rust/src/ontology/shared/array
    
    the code of the file until where you have to start completion: pub(crate) mod error;
pub(in crate::ontology) mod raw;

use std::num::NonZero;

use serde::{Deserialize, Serialize};

use crate::{url::BaseUrl, PropertyTypeReference, ValidateUrl, ValidationError};

#[derive(Debug, Clone, PartialEq, Eq, Serialize
    
    fn valid_url() {
        let url =
            VersionedUrl::from_str("https://blockprotocol.org/@alice/types/property-type/age/v/2")
                .expect("failed to parse VersionedUrl");
        let array = get_test_value_or_array(&url);

        array
            .validate_url(&url.base_url)
            .expect("failed to validate against base URL");
    }