Drupal 8 query users with boolean field != true and a specific role

gistfile1.txt

  $query = \Drupal::entityQuery('user')
            ->condition('roles', 'myRole', 'CONTAINS');

  $group = $query->orConditionGroup()
      ->notExists('field_processed')
      ->condition('field_processed', 1, '<>');


  $ids = $query->condition($group)->execute();