{"ast_node_type":"function","tokens":[{"end":60,"kind":"keyword","start":0,"text":"fn"}]}
    fn has_derive_copy(&self, expn_id: LocalExpnId) -> bool;
    /// Does `#[derive(...)]` attribute with the given `ExpnId` have built-in `Copy` inside it?
    /// Resolve paths inside the `#[derive(...)]` attribute with the given `ExpnId`.