if z.OldDataDir == "" {
		zb0001Len--
		zb0001Mask |= 0x10
	}
	// variable map header, size zb0001Len
	o = append(o, 0x80|uint8(zb0001Len))
	if zb0001Len == 0 {
		return
	}
	// string "BaseOptions"
	o = append(o, 0xab, 0x42, 0x61, 0x73, 0x65, 0x4f, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x73)
	// map header, size 0
	_ = z.BaseOptions
	o = append(o, 0x80)
	// string "r"
	o = append(o, 0xa1, 0x72)

      },
      "last_updated": "2023-06-20T09:07:41.955Z"
     }
    },
    {
     "name": "0.0.0.0_80",
     "active_state": {
      "version_info": "2023-06-20T09:07:41Z/3",
      "listener": {
       "@type": "type.googleapis.com/envoy.config.listener.v3.Listener",
       "name": "0.0.0.0_80",
       "address": {
        "socket_address": {
         "address": "0.0.0.0",
         "port_value": 80

    assertFailsWith<IllegalArgumentException> {
      Request.Builder().addHeader("a b", "c")
    }.also { expected ->
      assertThat(expected.message).isEqualTo("Unexpected char 0x20 at 1 in header name: a b")
    }
  }

  @Test
  fun requestHeaderNameWithTabForbidden() {
    assertFailsWith<IllegalArgumentException> {
      Request.Builder().addHeader("a\tb", "c")