Modify an Amazon RDS DB instance using an Amazon SDK

    public static void updateIntance(RdsClient rdsClient, String dbInstanceIdentifier, String masterUserPassword) {

        try {
            // For a demo - modify the DB instance by modifying the master password.
            ModifyDbInstanceRequest modifyDbInstanceRequest = ModifyDbInstanceRequest.builder()
                .dbInstanceIdentifier(dbInstanceIdentifier)
                .publiclyAccessible(true)
                .masterUserPassword(masterUserPassword)
                .build();

            ModifyDbInstanceResponse instanceResponse = rdsClient.modifyDBInstance(modifyDbInstanceRequest);
            System.out.print("The ARN of the modified database is: " +instanceResponse.dbInstance().dbInstanceArn());

        } catch (RdsException e) {
            System.out.println(e.getLocalizedMessage());
            System.exit(1);
        }
    }

suspend fun updateIntance(dbInstanceIdentifierVal: String?, masterUserPasswordVal: String?) {

    val request = ModifyDbInstanceRequest {
        dbInstanceIdentifier = dbInstanceIdentifierVal
        publiclyAccessible = true
        masterUserPassword = masterUserPasswordVal
    }

    RdsClient { region = "us-west-2" }.use { rdsClient ->
        val instanceResponse = rdsClient.modifyDbInstance(request)
        println("The ARN of the modified database is ${instanceResponse.dbInstance?.dbInstanceArn}")
    }
}