code: func (s *AuthorizationsService) List(ctx context.Context, opt *ListOptions) ([]*Authorization, *Response, error) {
  	u := "authorizations"
  	u, err := addOptions(u, opt)
  	if err != nil {
  		return nil, nil, err
  	}
  
  	req, err := s.client.NewRequest("GET", u, nil)
  	if err != nil {
  		return nil, nil, err
  	}
  
  	var auths []*Authorization
  	resp, err := s.client.Do(ctx, req, &auths)
  	if err != nil {
  		return nil, resp, err
  	}
  	return auths, resp, nil
  }
docs: // List the authorizations for the authenticated user.
  //
  // GitHub API docs: https://developer.github.com/v3/oauth_authorizations/#list-your-authorizations