code: public static function deleteMany(array $ids = array(), $connection)
      {
          if (!is_array($ids)) {
              throw new ClusterpointException("\"->deleteMany()\" function: \"_id\" is not in valid format.", 9002);
          }
          $connection->method = 'DELETE';
          $connection->action = '';
  
          // force strings! REST hates DELETE with integers for now...
          foreach ($ids as &$id) {
              $id = (string)$id;
          }
          $connection->query = json_encode($ids);
          return self::sendQuery($connection);
      }
docs: Set query parametrs to execute - delete many by "_id".
  
  @param  array  $id
  @param  \stdClass $connection
  @return \Clusterpoint\Response\Single