{"ast_node_type":"variable","tokens":[{"end":89,"kind":"keyword","start":0,"text":"if"}]}
                    if let Some(def_id) = typeck_results.type_dependent_def_id(ex.hir_id)
                hir::ExprKind::MethodCall(..) => {
                        && let method_ty = self.fcx.tcx.type_of(def_id).instantiate_identity()