{"ast_node_type":"function","tokens":[{"end":70,"kind":"keyword","start":0,"text":"fn"}]}
    fn is_backend_immediate(&self, layout: TyAndLayout<'tcx>) -> bool;
    fn immediate_backend_type(&self, layout: TyAndLayout<'tcx>) -> Self::Type;
    fn is_backend_scalar_pair(&self, layout: TyAndLayout<'tcx>) -> bool;