def prune_to_ingroup(self):
        """Remove nodes and edges from tree if they are not the ingroup or a descendant of it."""
        # Prune to just the ingroup
        if not self._ingroup_node_id:
            _LOG.debug('No ingroup node was specified.')
            self._ingroup_node_id = self.root_node_id
        elif self._ingroup_node_id != self.root_node_id:
            self._do_prune_to_ingroup()
            self.root_node_id = self._ingroup_node_id
        else:
            _LOG.debug('Ingroup node is root.')
        return self.root_node_id
def prune_to_ingroup ( self ) : if not self . _ingroup_node_id : _LOG . debug ( 'No ingroup node was specified.' ) self . _ingroup_node_id = self . root_node_id elif self . _ingroup_node_id != self . root_node_id : self . _do_prune_to_ingroup ( ) self . root_node_id = self . _ingroup_node_id else : _LOG . debug ( 'Ingroup node is root.' ) return self . root_node_id
Remove nodes and edges from tree if they are not the ingroup or a descendant of it.