code: public function removeUsersFromGroup($id, $group_remove_users_item)
      {
          list($response) = $this->removeUsersFromGroupWithHttpInfo($id, $group_remove_users_item);
          return $response;
      }
docs: Operation removeUsersFromGroup
  
  
  
  @param string $id ID of group to be modified (required)
  @param \ProcessMaker\PMIO\Model\GroupRemoveUsersItem $group_remove_users_item JSON API response with Users IDs to remove (required)
  @return \ProcessMaker\PMIO\Model\ResultSuccess
  @throws \ProcessMaker\PMIO\ApiException on non-2xx response