code: func (c *Client) FileSearch(path string, langs []string) (Subtitles, error) {
  	// Hash file, and other params values.
  	params, err := c.fileToSearchParams(path, langs)
  	if err != nil {
  		return nil, err
  	}
  	return c.SearchSubtitles(params)
  }
docs: // FileSearch searches subtitles for a file and list of languages.