code: func hasAdditionalNewField(original, modified map[string]interface{}) bool {
  	for k, v := range original {
  		if v == nil {
  			continue
  		}
  		if _, found := modified[k]; !found {
  			return true
  		}
  	}
  	return false
  }
docs: // hasAdditionalNewField returns if original map has additional key with non-nil value than modified.