syntax_data: {"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"hasher.write_usize(s.len());"}]}
source_snippet:             hasher.write_usize(s.len());
context_before:             // `-Cmetadata=a -Cmetadata=bc`
context_after:             hasher.write(s.as_bytes());