code: func (c *Client) CreateDictionaryItem(i *CreateDictionaryItemInput) (*DictionaryItem, error) {
  	if i.Service == "" {
  		return nil, ErrMissingService
  	}
  
  	if i.Dictionary == "" {
  		return nil, ErrMissingDictionary
  	}
  
  	path := fmt.Sprintf("/service/%s/dictionary/%s/item", i.Service, i.Dictionary)
  	resp, err := c.PostForm(path, i, nil)
  	if err != nil {
  		return nil, err
  	}
  
  	var b *DictionaryItem
  	if err := decodeJSON(&b, resp.Body); err != nil {
  		return nil, err
  	}
  	return b, nil
  }
docs: // CreateDictionaryItem creates a new Fastly dictionary item.