DescribeApplicationCommand

import { IoTFleetHubClient, DescribeApplicationCommand } from "@aws-sdk/client-iotfleethub"; // ES Modules import
// const { IoTFleetHubClient, DescribeApplicationCommand } = require("@aws-sdk/client-iotfleethub"); // CommonJS import
const client = new IoTFleetHubClient(config);
const input = { // DescribeApplicationRequest
  applicationId: "STRING_VALUE", // required
};
const command = new DescribeApplicationCommand(input);
const response = await client.send(command);
// { // DescribeApplicationResponse
//   applicationId: "STRING_VALUE", // required
//   applicationArn: "STRING_VALUE", // required
//   applicationName: "STRING_VALUE", // required
//   applicationDescription: "STRING_VALUE",
//   applicationUrl: "STRING_VALUE", // required
//   applicationState: "CREATING" || "DELETING" || "ACTIVE" || "CREATE_FAILED" || "DELETE_FAILED", // required
//   applicationCreationDate: Number("long"), // required
//   applicationLastUpdateDate: Number("long"), // required
//   roleArn: "STRING_VALUE", // required
//   ssoClientId: "STRING_VALUE",
//   errorMessage: "STRING_VALUE",
//   tags: { // TagMap
//     "<keys>": "STRING_VALUE",
//   },
// };