syntax_data: {"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"ty::ConstKind::Unevaluated(ty::UnevaluatedConst"}]}
source_snippet:             ty::ConstKind::Unevaluated(ty::UnevaluatedConst { def, args }) => {
context_before:         match ct.kind() {
context_after:                 match self.tcx().def_kind(def) {