{"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"_frame:"}]}
        _frame: interpret::Frame<'tcx, Self::Provenance>,
        _ecx: &mut InterpCx<'tcx, Self>,
    ) -> interpret::InterpResult<'tcx, interpret::Frame<'tcx, Self::Provenance, Self::FrameExtra>>