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: highlight.rs
    path of file: ./repos/slint/internal/interpreter
    
    the code of the file until where you have to start completion: // Copyright Â© SixtyFPS GmbH <info@slint.dev>
// SPDX-Licen
    
fn repeater_path(elem: &ElementRc) -> Option<Vec<String>> {
    let enclosing = elem.borrow().enclosing_component.upgrade().unwrap();
    if let Some(parent) = enclosing.parent_element.upgrade() {
        // This is not a repeater, it might be a popup menu which is not supported ATM
        parent.borrow().repeated.as_ref()?;

        let mut r = repeater_path(&parent)?;
        r.push(parent.borrow().id.clone());
        Some(r)
    } else {
        Some(vec![])
    }
}