code: func (r Network_Subnet) GetSubnetForIpAddress(ipAddress *string) (resp datatypes.Network_Subnet, err error) {
  	params := []interface{}{
  		ipAddress,
  	}
  	err = r.Session.DoRequest("SoftLayer_Network_Subnet", "getSubnetForIpAddress", params, &r.Options, &resp)
  	return
  }
docs: // Retrieve the subnet associated with an IP address. You may only retrieve subnets assigned to your SoftLayer customer account.