Internal Optional directionIndicates where this node is positioned relative to the root node. start indicates that this node must be positioned at the start of the root node, which is either the left or top of the root node. end indicates that this node must be positioned at the emd of the root node, which is either the right or bottom of the root node.
Optional isIndicates whether this node is the root of the mind map.
Optional node
Contains mind map node data, such as
nodeVieworisRoot.