syntax_data: {"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"HygieneData::with(|data|"}]}
source_snippet:         HygieneData::with(|data| data.is_descendant_of(self, data.outer_expn(ctxt)))
context_before:     pub fn outer_expn_is_descendant_of(self, ctxt: SyntaxContext) -> bool {
context_after:     }