/**
     * Connects to the OpenSearch cluster.
     * Creates a new client and waits for cluster health to be yellow or better.
     */
    public void connect() {
        destroy();
        client = createClient();

        final String[] indices = targetIndices != null ? targetIndices : new String[0];
        final ClusterHealthResponse healthResponse =

        // Should not throw NullPointerException
        try {
            // Note: We can't easily test connect() fully without mocking createClient()
            // This test verifies the null check logic indirectly
            final String[] indices = fesenClient.targetIndices != null ? fesenClient.targetIndices : new String[0];
            assertNotNull(indices);

            }
        });
        if (logger.isDebugEnabled()) {
            logger.debug("Tags updated: from={}, to={}", tagItems, tags);
        }
        try (StorageClient client = StorageClientFactory.createClient()) {
            client.setObjectTags(objectName, tags);
        } catch (final Exception e) {
            throw new StorageException("Failed to update tags for " + objectName, e);
        }
    }

    /**