syntax_data: {"ast_node_type":"variable","tokens":[{"end":85,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:                 if let Some(crit) = def.sizedness_constraint(self.tcx(), sizedness) {
context_before:             ty::Adt(def, args) => {
context_after:                     ty::Binder::dummy(vec![crit.instantiate(self.tcx(), args)])