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: reporting_descriptor.rs
    path of file: ./repos/hash/libs/sarif/src/schema
    
    the code of the file until where you have to start completion: use alloc::{
    borrow::Cow,
    collections::{BTreeMap, BTreeSet},
};

#[cfg(feature = "serde")]
use serde::{Deserialize, Serialize};
use url::Url;
use uuid::Uuid;

use crate::schema::MultiformatMessageString;

/// Metadata that describes a specific report produced by the tool, as part of the analysis it
/// provides or its runtime reporting.
#[derive(Debug, Clone, PartialEq, Eq)]
#[cfg_attr(
    feature = "serde",
    derive(Serialize, Deserialize),
    serde(rename_all = "camelCase")
)]
#[non_exhaustive]
pub struct ReportingDescriptor<'s> {
    /// A stable, opaque identifier for the report.
    #[cfg_attr(feature = "serde", serde(borrow, default))]
    pub id: Cow<'s, str>,

    /// A set of stable, opaque identifiers by which this report was known in some previous
    /// version of the analysis tool.
    #[cfg_attr(
        feature = "serde",
        serde(borrow, default, skip_serializing_if = "BTreeSet::is_empty")
    )]
    pub deprecated_ids: BTreeSet<Cow<'s, str>>,

    /// A unique identifier for the report in the form of a GUID.
    #[cfg_attr(
        feature = "serde",
        serde(default, skip_serializing_if = "Option::is_none")
    )]
    pub guid: Option<Uuid>,

    /// A set of unique identifies in the form of a GUID by which this report was known in some
    /// previous version of the analysis tool.
    #[cfg_attr(
        feature = "serde",
        serde(default, skip_serializing_if = "BTreeSet::is_empty")
    )]
 
    
    fn error_308() {
        let code = 308;
        let uri = error_code_to_uri(code);
        let help = error_code_to_help(code).expect("failed to get help message");

        let descriptor = ReportingDescriptor::new(format!("E{code:04}"))
            .with_name("mismatched types")
            .with_short_description(MultiformatMessageString {
                text: Cow::Borrowed("Expected type did not match the received type."),
                markdown: None,
                properties: PropertyBag::default(),
            })
            .with_full_description(MultiformatMessageString {
                text: Cow::Borrowed("The compiler expected one type but found another."),
                markdown: None,
                properties: PropertyBag::default(),
            })
            .with_help(MultiformatMessageString {
                text: Cow::Borrowed(&help),
                markdown: None,
                properties: PropertyBag::default(),
            })
            .with_help_uri(Url::parse(&uri).expect("failed to parse URL"));

        assert_eq!(descriptor.id, format!("E{code:04}"));
        assert_eq!(
            descriptor.name.expect("name was not set"),
            "mismatched types"
        );
        assert_eq!(
            descriptor
                .short_description
                .expect("short description was not set")
                .text,
            "Expected type did not match the received type."
        );
        assert_eq!(
            descriptor
                .full_description
                .expect("full description was not set")
                .text,
            "The compiler expected one type but found another."
        );
        assert_eq!(descriptor.help.expect("help text was not set").text, help);
        assert_eq!(
            descriptor.help_uri.expect("help URI was not set").as_str(),
            uri
        );
    }