DOC: Explain example in unit tests

src/doc/converters.rst

@@ -272,6 +272,15 @@ need to be reflected in the datamodel.  Using the default names, you would need
 although the names of both property and record type can be configured within the
 cfood definition.
 
+A simple example of a cfood definiton for HDF5 files can be found in the `unit
+tests
+<https://gitlab.com/linkahead/linkahead-crawler/-/blob/main/unittests/h5_cfood.yml?ref_type=heads>`_
+and shows how the individual converters are used in order to crawl a `simple
+example file
+<https://gitlab.com/linkahead/linkahead-crawler/-/blob/main/unittests/hdf5_dummy_file.hdf5?ref_type=heads`_
+containing groups, subgroups, and datasets, together with their respective
+attributes.
+
 H5FileConverter
 ---------------