code: func ConvertPath(c *Client, path string) (*Response, error) {
  	f, err := os.Open(path)
  	if err != nil {
  		return nil, err
  	}
  	defer f.Close()
  
  	return c.Convert(f, f.Name())
  }
docs: // ConvertPath uses the docconv Client to convert the local file
  // found at path.