/**
  * Returns the number of objects which are in this state
  *
  * @param \eZ\Publish\API\Repository\Values\ObjectState\ObjectState $objectState
  *
  * @return int
  */
 public function getContentCount(ObjectState $objectState)
 {
     $groupId = $objectState->getObjectStateGroup()->id;
     $contentCount = 0;
     foreach ($this->objectStateMap as $objectId => $stateMap) {
         if (isset($stateMap[$groupId]) && $stateMap[$groupId] == $objectState->id) {
             ++$contentCount;
         }
     }
     return $contentCount;
 }