code: func (c *Client) CreateS3(i *CreateS3Input) (*S3, error) {
  	if i.Service == "" {
  		return nil, ErrMissingService
  	}
  
  	if i.Version == 0 {
  		return nil, ErrMissingVersion
  	}
  
  	path := fmt.Sprintf("/service/%s/version/%d/logging/s3", i.Service, i.Version)
  	resp, err := c.PostForm(path, i, nil)
  	if err != nil {
  		return nil, err
  	}
  
  	var s3 *S3
  	if err := decodeJSON(&s3, resp.Body); err != nil {
  		return nil, err
  	}
  	return s3, nil
  }
docs: // CreateS3 creates a new Fastly S3.