{"ast_node_type":"variable","tokens":[{"end":89,"kind":"keyword","start":0,"text":"if"}]}
                if let Some(def_id) = cx.typeck_results().type_dependent_def_id(e.hir_id)
            hir::ExprKind::MethodCall(_, l, [r], _)
                    && let Some(diag_item) = cx.tcx.get_diagnostic_name(def_id)