code: func (cm *CheckManager) fetchCheckBySubmissionURL(submissionURL api.URLType) (*api.Check, error) {
  	if string(submissionURL) == "" {
  		return nil, errors.New("[ERROR] Invalid submission URL (blank)")
  	}
  
  	u, err := url.Parse(string(submissionURL))
  	if err != nil {
  		return nil, err
  	}
  
  	// valid trap url: scheme://host[:port]/module/httptrap/UUID/secret
  
  	// does it smell like a valid trap url path
  	if !strings.Contains(u.Path, "/module/httptrap/") {
  		return nil, fmt.Errorf("[ERROR] Invalid submission URL '%s', unrecognized path", submissionURL)
  	}
  
  	// extract uuid
  	pathParts := strings.Split(strings.Replace(u.Path, "/module/httptrap/", "", 1), "/")
  	if len(pathParts) != 2 {
  		return nil, fmt.Errorf("[ERROR] Invalid submission URL '%s', UUID not where expected", submissionURL)
  	}
  	uuid := pathParts[0]
  
  	filter := api.SearchFilterType{"f__check_uuid": []string{uuid}}
  
  	checks, err := cm.apih.SearchChecks(nil, &filter)
  	if err != nil {
  		return nil, err
  	}
  
  	if len(*checks) == 0 {
  		return nil, fmt.Errorf("[ERROR] No checks found with UUID %s", uuid)
  	}
  
  	numActive := 0
  	checkID := -1
  
  	for idx, check := range *checks {
  		if check.Active {
  			numActive++
  			checkID = idx
  		}
  	}
  
  	if numActive > 1 {
  		return nil, fmt.Errorf("[ERROR] Multiple checks with same UUID %s", uuid)
  	}
  
  	check := (*checks)[checkID]
  
  	return &check, nil
  
  }
docs: // FetchCheckBySubmissionURL fetch a check configuration by submission_url