{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"ty.and_then(|ty|"}]}
                    ty.and_then(|ty| ty.original.as_callable(sema.db))
                    let ty = sema.type_of_expr(&it.into());
                        .map(|c| (Some(c.return_type()), None))