syntax_data: {"ast_node_type":"other","tokens":[{"end":45,"kind":"keyword","start":0,"text":".collect::<Vec<_>>();"}]}
source_snippet:                         .collect::<Vec<_>>();
context_before:                         .map(|&(ref k, ref v)| format!("{k}={v}"))
context_after:                     d.insert(name, obj.to_json());