{"ast_node_type":"function","tokens":[{"end":42,"kind":"keyword","start":0,"text":"pub"}]}
    pub fn ident(&self) -> Option<Ident> {
    /// For a single-segment meta item, returns its name; otherwise, returns `None`.
        if let [PathSegment { ident, .. }] = self.path.segments[..] { Some(ident) } else { None }