code: func (j *Json) StringArray() ([]string, error) {
  	arr, err := j.Array()
  	if err != nil {
  		return nil, err
  	}
  	retArr := make([]string, 0, len(arr))
  	for _, a := range arr {
  		if a == nil {
  			retArr = append(retArr, "")
  			continue
  		}
  		s, ok := a.(string)
  		if !ok {
  			return nil, err
  		}
  		retArr = append(retArr, s)
  	}
  	return retArr, nil
  }
docs: // StringArray type asserts to an `array` of `string`