The number of levels above this node; zero for top level nodes. Generally used by the UI to indent the row and its expand/collapse icon
int
True if this node has children and can be expanded; false otherwise. Note that this value may change when the table updates, depending on the table's configuration
boolean
True if this node is currently expanded to show its children; false otherwise. Those children will be the rows below this one with a greater depth than this one
boolean
Row implementation that also provides additional read-only properties. represents visible rows in the table, but with additional properties to reflect the tree structure.