public static unsafe void AddFilteredDataset_Fletcher(long fileId)
{
long res;
var length = (ulong)TestData.MediumData.Length / 4;
var dims = new ulong[] { length, 4 };
var dcpl_id = H5P.create(H5P.DATASET_CREATE);
res = H5P.set_chunk(dcpl_id, 2, new ulong[] { 1000, 4 });
res = H5P.set_fletcher32(dcpl_id);
TestUtils.Add(ContainerType.Dataset, fileId, "filtered", $"fletcher", H5T.NATIVE_INT32, TestData.MediumData.AsSpan(), dims, cpl: dcpl_id);
res = H5P.close(dcpl_id);
}