syntax_data: {"ast_node_type":"impl","tokens":[{"end":71,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                     // on the `PartialEq` impl for `str` to b correct!)
context_before:                     // (Interestingly this means that exhaustiveness analysis relies, for soundness,
context_after:                     match *ty.kind() {