@Override
    public java.util.concurrent.Future<DescribeClusterParameterGroupsResult> describeClusterParameterGroupsAsync(
            com.amazonaws.handlers.AsyncHandler<DescribeClusterParameterGroupsRequest, DescribeClusterParameterGroupsResult> asyncHandler) {

        return describeClusterParameterGroupsAsync(new DescribeClusterParameterGroupsRequest(), asyncHandler);
    }
Simplified method form for invoking the DescribeClusterParameterGroups operation with an AsyncHandler.

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