{"ast_node_type":"other","tokens":[{"end":99,"kind":"keyword","start":0,"text":")"}]}
) -> (ExpressionStore, ExpressionStoreSourceMap, TypeRefId, Option<TraitRef>, Arc<GenericParams>) {
    impl_id: ImplId,
    let mut expr_collector = ExprCollector::new(db, module, impl_syntax.file_id);