{"ast_node_type":"other","tokens":[{"end":6,"kind":"keyword","start":0,"text":"//"}]}
    //
    // [rustc's `is_known_valid_scrutinee`](https://github.com/rust-lang/rust/blob/c9bd03cb724e13cca96ad320733046cbdb16fbbe/compiler/rustc_mir_build/src/thir/pattern/check_match.rs#L288)
    // While the above function in rustc uses thir exprs, r-a doesn't have them.