syntax_data: {"ast_node_type":"other","tokens":[{"end":24,"kind":"keyword","start":0,"text":"//"}]}
source_snippet:     // for more details.
context_before:     // to use them interchangeably. See the note above (regarding `-O` and `-C opt-level`)
context_after:     let debug_assertions = cg.debug_assertions.unwrap_or(opt_level == OptLevel::No);