{"ast_node_type":"variable","tokens":[{"end":70,"kind":"keyword","start":0,"text":"let"}]}
            let type_ref = type_refs.next().and_then(ast::Type::cast);
                anchor.syntax().children().filter(|node| ast::Type::can_cast(node.kind()));
            let trait_ref = type_refs.next().and_then(ast::PathType::cast);