{"ast_node_type":"other","tokens":[{"end":90,"kind":"keyword","start":0,"text":"//"}]}
        // FIXME(#132279, generic_const_exprs): Using `try_normalize_erasing_regions` here
    fn new(fcx: &FnCtxt<'_, 'tcx>) -> Self {
        // means we can't handle opaque types in their defining scope.