code: public PutObjectResponse putObject(String bucketName, String key, byte[] value) {
          return this.putObject(bucketName, key, value, new ObjectMetadata());
      }
docs: Uploads the specified bytes to Bos under the specified bucket and key name.
  
  @param bucketName The name of an existing bucket, to which you have Write permission.
  @param key The key under which to store the specified file.
  @param value The bytes containing the value to be uploaded to Bos.
  @return A PutObjectResponse object containing the information returned by Bos for the newly created object.