public function addIncludedResourceObject(ResourceObject ...$resourceObjects) {
		foreach ($resourceObjects as $resourceObject) {
			try {
				$this->validator->claimUsedResourceIdentifier($resourceObject);
			}
			catch (DuplicateException $e) {
				// silently skip duplicates
				continue;
			}
			
			$this->includedResources[] = $resourceObject;
		}
	}