syntax_data: {"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"///"}]}
source_snippet:     /// Optionally returns a human-readable error message in `OutMessage`.
context_before:     /// Returns 0 on success and the generated module in `OutModule`.
context_after:     #[deprecated(since = "38.0.0", note = "Use LLVMParseBitcode2")]