docs: def remove_child_catalog(self, catalog_id, child_id):
          """Removes a child from a catalog.
  
          arg:    catalog_id (osid.id.Id): the ``Id`` of a catalog
          arg:    child_id (osid.id.Id): the ``Id`` of the new child
          raise:  NotFound - ``catalog_id`` is not a parent of
                  ``child_id``
          raise:  NullArgument - ``catalog_id`` or ``child_id`` is
                  ``null``
          raise:  OperationFailed - unable to complete request
          raise:  PermissionDenied - authorization failure occurred
          *compliance: mandatory -- This method must be implemented.*
  
          """
          # Implemented from template for
          # osid.resource.BinHierarchyDesignSession.remove_child_bin_template
          if self._catalog_session is not None:
              return self._catalog_session.remove_child_catalog(catalog_id=catalog_id, child_id=child_id)
          return self._hierarchy_session.remove_child(id_=catalog_id, child_id=child_id)