QueryAggregateInterface

class \Drupal\Core\Entity\Query\Null\Query extends \Drupal\Core\Entity\Query\QueryBase implements \Drupal\Core\Entity\Query\QueryInterface, \Drupal\Core\Entity\Query\QueryAggregateInterface
class \Drupal\Core\Entity\Query\Sql\QueryAggregate extends \Drupal\Core\Entity\Query\Sql\Query implements \Drupal\Core\Entity\Query\QueryAggregateInterface
class \Drupal\workspaces\EntityQuery\QueryAggregate extends \Drupal\Core\Entity\Query\Sql\QueryAggregate uses \Drupal\workspaces\EntityQuery\QueryTrait