syntax_data: {"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"match"}]}
source_snippet:         match self.ctxt().outer_expn_data().kind {
context_before:     pub fn is_desugaring(self, kind: DesugaringKind) -> bool {
context_after:             ExpnKind::Desugaring(k) => k == kind,