code: func (c *Client) ClearCache(account, repo string) (string, error) {
  	status := &struct {
  		Status string `json:"status"`
  	}{}
  
  	err := c.request("DELETE", fmt.Sprintf("project/%s/%s/build-cache", account, repo), status, nil, nil)
  	if err != nil {
  		return "", err
  	}
  
  	return status.Status, nil
  }
docs: // ClearCache clears the cache of the specified project
  // Returns the status returned by CircleCI