def description_set(id, description)
      wf_source_id?(id)
      api.post([id, 'description'].uri_concat, description,
               'application/json')
    end
def description_set(id, description)
      wf_source_id?(id)
      api.post([id, 'description'].uri_concat, description,
               'application/json')
    end
POST /api/v2/source/id/description
 Set description associated with a specific source