syntax_data: {"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"HygieneData::with(|data|"}]}
source_snippet:     HygieneData::with(|data| data.walk_chain(span, to))
context_before: pub fn walk_chain(span: Span, to: SyntaxContext) -> Span {
context_after: }