code: func (healthStatus *ContainerHealthStatus) UnmarshalJSON(b []byte) error {
  	*healthStatus = ContainerHealthUnknown
  
  	if strings.ToLower(string(b)) == "null" {
  		return nil
  	}
  	if b[0] != '"' || b[len(b)-1] != '"' {
  		return errors.New("container health status unmarshal: status must be a string or null; Got " + string(b))
  	}
  
  	strStatus := string(b[1 : len(b)-1])
  	switch strStatus {
  	case "UNKNOWN":
  	// The health status is already set to ContainerHealthUnknown initially
  	case "HEALTHY":
  		*healthStatus = ContainerHealthy
  	case "UNHEALTHY":
  		*healthStatus = ContainerUnhealthy
  	default:
  		return errors.New("container health status unmarshal: unrecognized status: " + string(b))
  	}
  	return nil
  }
docs: // UnmarshalJSON overrides the logic for parsing the JSON-encoded container health data