@Override
    public java.util.concurrent.Future<DescribeEventSubscriptionsResult> describeEventSubscriptionsAsync(
            com.amazonaws.handlers.AsyncHandler<DescribeEventSubscriptionsRequest, DescribeEventSubscriptionsResult> asyncHandler) {

        return describeEventSubscriptionsAsync(new DescribeEventSubscriptionsRequest(), asyncHandler);
    }
Simplified method form for invoking the DescribeEventSubscriptions operation with an AsyncHandler.

@see #describeEventSubscriptionsAsync(DescribeEventSubscriptionsRequest, com.amazonaws.handlers.AsyncHandler)
aws-java-sdk-redshift/src/main/java/com/amazonaws/services/redshift/AmazonRedshiftAsyncClient.java