syntax_data: {"ast_node_type":"function","tokens":[{"end":59,"kind":"keyword","start":0,"text":"pub"}]}
source_snippet: pub fn walk_chain_collapsed(span: Span, to: Span) -> Span {
context_before: /// The returned span can then be used in emitted debuginfo.
context_after:     HygieneData::with(|data| data.walk_chain_collapsed(span, to))