syntax_data: {"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"codegen_backend:"}]}
source_snippet:     codegen_backend: Option<String> = (None, parse_opt_string, [TRACKED],
context_before:         "hash algorithm of source files used to check freshness in cargo (`blake3` or `sha256`)"),
context_after:         "the backend to use"),