syntax_data: {"ast_node_type":"variable","tokens":[{"end":93,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:         if let Some(simp) = fast_reject::simplify_type(self, self_ty, TreatParams::AsRigid) {
context_before:         // `TreatParams::InstantiateWithInfer` while actually adding them.
context_after:             if let Some(impls) = impls.non_blanket_impls.get(&simp) {