Function Node._exitTree

Called when the node is about to leave the SceneTree (e.g. upon freeing, scene changing, or after calling removeChild in a script). If the node has children, its exitTree callback will be called last, after all its children have left the tree. Corresponds to the constant NOTIFICATION_EXIT_TREE notification in GodotObject.notification and signal treeExiting. To get notified when the node has already left the active tree, connect to the treeExited.

void _exitTree() nothrow @nogc;