code: func (converter ListConverter) Convert(value interface{}, item AttributeAccessor) (interface{}, error) {
  	if value == nil {
  		return make([]string, 0), nil
  	}
  	result := make([]string, 1)
  	result[0] = value.(string)
  	return result, nil
  }
docs: // Convert converts the given value to a list containing this single value as string