docs: def collection_list(self, resource_id, resource_type="collection"):
          """
          Fetches a list of slug representing descriptions within the specified parent description.
  
          :param resource_id str: The slug of the description to fetch children from.
          :param resource_type str: no-op; not required or used in this implementation.
  
          :return: A list of strings representing the slugs for all children of the requested description.
          :rtype list:
          """
  
          def fetch_children(children):
              results = []
  
              for child in children:
                  results.append(child["slug"])
  
                  if "children" in child:
                      results.extend(fetch_children(child["children"]))
  
              return results
  
          response = self._get(
              urljoin(self.base_url, "informationobjects/tree/{}".format(resource_id))
          )
          tree = response.json()
          return fetch_children(tree["children"])