{"ast_node_type":"other","tokens":[{"end":26,"kind":"keyword","start":0,"text":"prev_discr"}]}
        prev_discr = Some(
        let wrapped_discr = prev_discr.map_or(initial, |d| d.wrap_incr(tcx));
            if let ty::VariantDiscr::Explicit(const_def_id) = variant.discr {