code: func (c *Client) ListServiceHooks(ctx context.Context) ([]*ServiceHook, *Response, error) {
  	u := "hooks"
  	req, err := c.NewRequest("GET", u, nil)
  	if err != nil {
  		return nil, nil, err
  	}
  
  	var hooks []*ServiceHook
  	resp, err := c.Do(ctx, req, &hooks)
  	if err != nil {
  		return nil, resp, err
  	}
  
  	return hooks, resp, nil
  }
docs: // ListServiceHooks lists all of the available service hooks.
  //
  // GitHub API docs: https://developer.github.com/webhooks/#services