@Override
    public java.util.concurrent.Future<DescribeEventCategoriesResult> describeEventCategoriesAsync(
            com.amazonaws.handlers.AsyncHandler<DescribeEventCategoriesRequest, DescribeEventCategoriesResult> asyncHandler) {

        return describeEventCategoriesAsync(new DescribeEventCategoriesRequest(), asyncHandler);
    }
Simplified method form for invoking the DescribeEventCategories operation with an AsyncHandler.

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