code: public function listRoles($includeDeleted = false, CachePolicy $cachePolicy = null)
      {
          $parameters = [
              'query' => ['includeDeleted' => $includeDeleted],
              'body' => json_encode([], JSON_UNESCAPED_UNICODE),
              'headers' => [],
          ];
  
          $result = $this->get('v1/accounts/roles', $parameters, $cachePolicy);
          foreach ($result as &$entry) {
              $entry = new Role($entry);
          }
          unset($entry);
          reset($result);
  
          return $result;
      }
docs: Lists Roles available.
  
  Lists all Roles available
  
  @param bool        $includeDeleted indicates if we should include removed Roles in the result
  @param CachePolicy $cachePolicy    a custom cache policy used for this request only
  
  @return Role[]