internal DescribeEventCategoriesResponse DescribeEventCategories(DescribeEventCategoriesRequest request)
{
var marshaller = new DescribeEventCategoriesRequestMarshaller();
var unmarshaller = DescribeEventCategoriesResponseUnmarshaller.Instance;
return Invoke<DescribeEventCategoriesRequest,DescribeEventCategoriesResponse>(request, marshaller, unmarshaller);
}