{"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":"//"}]}
            // `pin [ const | mut ]`.
        } else if let Some((ast::Pinnedness::Pinned, mutbl)) = self.parse_pin_and_mut() {
            // `pin` has been gated in `self.parse_pin_and_mut()` so we don't