code: func (api *API) OrganizationRoles(organizationID string) ([]OrganizationRole, ResultInfo, error) {
  	var r organizationRolesResponse
  	uri := "/organizations/" + organizationID + "/roles"
  	res, err := api.makeRequest("GET", uri, nil)
  	if err != nil {
  		return []OrganizationRole{}, ResultInfo{}, errors.Wrap(err, errMakeRequestError)
  	}
  
  	err = json.Unmarshal(res, &r)
  	if err != nil {
  		return []OrganizationRole{}, ResultInfo{}, errors.Wrap(err, errUnmarshalError)
  	}
  
  	return r.Result, r.ResultInfo, nil
  }
docs: // OrganizationRoles returns list of roles for specified organization of the logged-in user.
  //
  // API reference: https://api.cloudflare.com/#organization-roles-list-roles