syntax_data: {"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:                 // cleanup will still happen, and terminate will happen afterwards handled by
context_before:                 // is replaced with terminate. For those with `UnwindAction::Cleanup`,
context_after:                 // the `UnwindResume` -> `UnwindTerminate` terminator replacement.