Jelaskan penawaran umum menggunakan AWS SDK

// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
package com.example.awsmarketplace.catalogapi;

import static com.example.awsmarketplace.utils.ReferenceCodesConstants.*;
import com.example.awsmarketplace.utils.ReferenceCodesUtils;

import software.amazon.awssdk.auth.credentials.ProfileCredentialsProvider;
import software.amazon.awssdk.http.apache.ApacheHttpClient;
import software.amazon.awssdk.services.marketplacecatalog.MarketplaceCatalogClient;
import software.amazon.awssdk.services.marketplacecatalog.model.DescribeEntityRequest;
import software.amazon.awssdk.services.marketplacecatalog.model.DescribeEntityResponse;

public class DescribeEntity {

	/*
	 * Describe my AMI or SaaS or Container product and check if it contains all the information I need to know about the product
	 */
	public static void main(String[] args) {

		String offerId = args.length > 0 ? args[0] : OFFER_ID;

		DescribeEntityResponse describeEntityResponse = getDescribeEntityResponse(offerId);

		ReferenceCodesUtils.formatOutput(describeEntityResponse);
	}

	public static DescribeEntityResponse getDescribeEntityResponse(String offerId) {
		MarketplaceCatalogClient marketplaceCatalogClient = 
				MarketplaceCatalogClient.builder()
				.httpClient(ApacheHttpClient.builder().build())
				.credentialsProvider(ProfileCredentialsProvider.create())
				.build();
		
		DescribeEntityRequest describeEntityRequest = 
				DescribeEntityRequest.builder()
				.catalog(AWS_MP_CATALOG)
				.entityId(offerId)
				.build();

		DescribeEntityResponse describeEntityResponse = marketplaceCatalogClient.describeEntity(describeEntityRequest);
		return describeEntityResponse;
	}
}

# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0
"""
Purpose
Shows how to use the AWS SDK for Python (Boto3) search for offer information in the AWS Marketplace Catalog
CAPI-29
"""

import json
import logging

import boto3
from botocore.exceptions import ClientError

logger = logging.getLogger(__name__)

OFFER_ID = "offer-1111111111111"


def pretty_print(response):
    json_object = json.dumps(response, indent=4)
    print(json_object)


def get_offer_information(mp_client, entity_id):
    """
    Returns information about a given offer
    Args: entity_id str: Entity to return
    Returns: dict: Dictionary of offer information
    """

    try:
        response = mp_client.describe_entity(
            Catalog="AWSMarketplace",
            EntityId=entity_id,
        )

        return response

    except ClientError as e:
        if e.response["Error"]["Code"] == "ResourceNotFoundException":
            logger.error("Offer with ID %s not found.", entity_id)
        else:
            logger.error("Unexpected error: %s", e)


def usage_demo():
    logging.basicConfig(level=logging.INFO, format="%(levelname)s: %(message)s")

    print("-" * 88)
    print("Looking for an offer in the AWS Marketplace Catalog.")
    print("-" * 88)

    mp_client = boto3.client("marketplace-catalog")

    pretty_print(get_offer_information(mp_client, OFFER_ID))


if __name__ == "__main__":
    usage_demo()