chromium/chromeos/components/test/data/onc/policy/policy_exhaustive_global_network_configuration.onc

{
  "NetworkConfigurations": [ ],
  "GlobalNetworkConfiguration": {
    "AllowOnlyPolicyCellularNetworks": true,
    "AllowOnlyPolicyNetworksToAutoconnect": true,
    "AllowOnlyPolicyNetworksToConnect": true,
    "AllowOnlyPolicyNetworksToConnectIfAvailable": true,
    "BlockedHexSSIDs": [ "blocked_ssid" ],
    "DisableNetworkTypes": [ "VPN" ]
  },
  "Type": "UnencryptedConfiguration"
}