* @param filename
*/
public void putObject(String bucketName, String objectName, String...filename){
try {
instance.putObject(bucketName,objectName,filename,null);...* @param stream
*/
public void putObject(String bucketName, String objectName, InputStream...stream){
try {
instance.putObject(bucketName,objectName,stream,null);
}...*/
public void removeObject(String bucketName, String objectName){
try {