If the node has not yet been built, setting this to %TRUE will add a dummy child node. This dummy node will be removed when when the node is built by the registered #DzlTreeBuilder instances.
If the node has children.
See Implementation
If the node has not yet been built, setting this to %TRUE will add a dummy child node. This dummy node will be removed when when the node is built by the registered #DzlTreeBuilder instances.