```* Only request the `classes_by_source` product ...
# generalb
bored-art-40741
10/23/2015, 10:38 PM Copy code
* Only request the `classes_by_source` product if it is necessary
`RB #2939 <https://rbcommons.com/s/twitter/r/2939>`_bored-art-40741
10/23/2015, 10:38 PM* Only request the `classes_by_source` product if it is necessary
`RB #2939 <https://rbcommons.com/s/twitter/r/2939>`_