shown in other instead.
A dummy node is a zero-sized node that has no visual representation. It is used to organize the other nodes into a hierarchy: the dummy node serves as a parent node and enables to organize the other nodes that are made its children into a group.
static NodeDummyPtr create()Constructor. Creates a dummy node.
Ptr<NodeDummy> cast(const Ptr<Node> & node)
- const Ptr<Node> & node