code: def is_child_of_log(self, id_, log_id):
          
          # Implemented from template for
          # osid.resource.BinHierarchySession.is_child_of_bin
          if self._catalog_session is not None:
              return self._catalog_session.is_child_of_catalog(id_=id_, catalog_id=log_id)
          return self._hierarchy_session.is_child(id_=log_id, child_id=id_)
docs: Tests if an ``Id`` is a direct child of a log.
  
          arg:    id (osid.id.Id): an ``Id``
          arg:    log_id (osid.id.Id): the ``Id`` of a log
          return: (boolean) - ``true`` if this ``id`` is a child of
                  ``log_id,``  ``false`` otherwise
          raise:  NotFound - ``log_id`` is not found
          raise:  NullArgument - ``id`` or ``log_id`` is ``null``
          raise:  OperationFailed - unable to complete request
          raise:  PermissionDenied - authorization failure
          *compliance: mandatory -- This method must be implemented.*
          *implementation notes*: If ``id`` not found return ``false``.