Collapsible state of the tree item

Static variables

@:enumstaticread onlyCollapsed:TreeItemCollapsibleState

Determines an item is collapsed

@:enumstaticread onlyExpanded:TreeItemCollapsibleState

Determines an item is expanded

@:enumstaticread onlyNone:TreeItemCollapsibleState

Determines an item can be neither collapsed nor expanded. Implies it has no children.