how to determine the Julia type of dataset elements

[ExpandingMan]

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Is there any way of determining the eltype of a dataset containing Julia compound types? I assume the answer is yes, since once I actually read elements out of the dataset they get converted correctly. If one does eltype(dset) one gets HDF5Compound which isn't particularly helpful. For the time being as a work-around I'm reading in just the first element of the dataset and checking for what type it gets converted to.