DEFINITION: Virtual DataSet ABB is a Data Object allowing a number of real datasets to be mapped together into a single, sliceable dataset via an interface layer. The mapping can be made ahead of time, before the parent files are written, and is transparent to the parent dataset characteristics.The datasets can be meshed in arbitrary combinations, and even the data type converted. Source: H5PY (https://docs.h5py.org/en/stable/vds.html)