syntax_data: {"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"HygieneData::with(|data|"}]}
source_snippet:         HygieneData::with(|data| data.expn_data(self).clone())
context_before:     pub fn expn_data(self) -> ExpnData {
context_after:     }