tree property
final
The list of TreeSliverNode
s that may be displayed in the TreeSliver.
Beyond root nodes, whether or not a given TreeSliverNode
is displayed
depends on the TreeSliverNode.isExpanded value of its parent. The
TreeSliver will set the TreeSliverNode.parent and
TreeSliverNode.depth as nodes are built on demand to ensure the
integrity of the tree.
Implementation
final List<TreeSliverNode<T>> tree;