src/Endpoints/Transform.php [514:528]:
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	public function upgradeTransforms(?array $params = null)
	{
		$params = $params ?? [];
		$url = '/_transform/_upgrade';
		$method = 'POST';

		$url = $this->addQueryString($url, $params, ['dry_run','timeout','pretty','human','error_trace','source','filter_path']);
		$headers = [
			'Accept' => 'application/json',
			'Content-Type' => 'application/json',
		];
		$request = $this->createRequest($method, $url, $headers, $params['body'] ?? null);
		$request = $this->addOtelAttributes($params, [], $request, 'transform.upgrade_transforms');
		return $this->client->sendRequest($request);
	}
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src/Endpoints/Ilm.php [211:225]:
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	public function migrateToDataTiers(?array $params = null)
	{
		$params = $params ?? [];
		$url = '/_ilm/migrate_to_data_tiers';
		$method = 'POST';

		$url = $this->addQueryString($url, $params, ['master_timeout','dry_run','pretty','human','error_trace','source','filter_path']);
		$headers = [
			'Accept' => 'application/json',
			'Content-Type' => 'application/json',
		];
		$request = $this->createRequest($method, $url, $headers, $params['body'] ?? null);
		$request = $this->addOtelAttributes($params, [], $request, 'ilm.migrate_to_data_tiers');
		return $this->client->sendRequest($request);
	}
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