code: @Override
      public java.util.concurrent.Future<DescribeCacheEngineVersionsResult> describeCacheEngineVersionsAsync(
              com.amazonaws.handlers.AsyncHandler<DescribeCacheEngineVersionsRequest, DescribeCacheEngineVersionsResult> asyncHandler) {
  
          return describeCacheEngineVersionsAsync(new DescribeCacheEngineVersionsRequest(), asyncHandler);
      }
docs: Simplified method form for invoking the DescribeCacheEngineVersions operation with an AsyncHandler.
  
  @see #describeCacheEngineVersionsAsync(DescribeCacheEngineVersionsRequest, com.amazonaws.handlers.AsyncHandler)