syntax_data: {"ast_node_type":"variable","tokens":[{"end":73,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:         let checksum_hash = checksum_hash_kind.map(|checksum_hash_kind| {
context_before:         let src_hash = SourceFileHash::new_in_memory(hash_kind, src.as_bytes());
context_after:             if checksum_hash_kind == hash_kind {