TOPO_METH_CONTAINS_RET
if (nvlist_lookup_uint32(nvl, TOPO_METH_CONTAINS_RET,
(void) nvlist_lookup_uint32(out, TOPO_METH_CONTAINS_RET, &contains);
if (nvlist_add_uint32(*out, TOPO_METH_CONTAINS_RET,