* @param inputStream the input stream of data to upload
     * @param size the size of the data in bytes
     * @param contentType the MIME type of the content
     */
    void uploadObject(String objectName, InputStream inputStream, long size, String contentType);

    /**
     * Downloads an object from storage.
     *
     * @param objectName the name/path of the object to download

import static org.codelibs.fess.app.web.admin.storage.AdminStorageAction.getObjectName;
import static org.codelibs.fess.app.web.admin.storage.AdminStorageAction.uploadObject;

import java.util.List;
import java.util.Map;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.core.lang.StringUtil;

     * @throws StorageException if the upload fails
     */
    public static void uploadObject(final String objectName, final MultipartFormFile uploadFile) {
        try (final InputStream in = uploadFile.getInputStream(); final StorageClient client = StorageClientFactory.createClient()) {
            client.uploadObject(objectName, in, uploadFile.getFileSize(), "application/octet-stream");
        } catch (final Exception e) {

        this.s3Client = builder.build();
    }

    private String getRegion(final String region) {
        return StringUtil.isNotBlank(region) ? region : "us-east-1";
    }

    @Override
    public void uploadObject(final String objectName, final InputStream inputStream, final long size, final String contentType) {
        try {
            final PutObjectRequest request =

            // If no credentials path, uses default credentials (GOOGLE_APPLICATION_CREDENTIALS env var)
        }

        this.storage = builder.build().getService();
    }

    @Override
    public void uploadObject(final String objectName, final InputStream inputStream, final long size, final String contentType) {
        try {
            final BlobId blobId = BlobId.of(bucket, objectName);