def METHOD_NAME(self):
    main_tree = self.channel.main_tree
    tree_data = main_tree.get_tree_data()
    assert tree_data, "No tree_data returned"
    diff = compare_trees_children(
        tree_data,
        self.expected_tree,
        attrs=["title", "node_id", "kind"],
        mapB={"kind": "kind_id"},
    )
    assert not diff, "Found difference in tree structures:" + str(diff)