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
Returns the row key for this row.
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
Returns the value for the given column in this row.
the column to read
the value in this row for the specified column
Row implementation that also provides additional read-only properties. Represents visible rows in the table, but with additional properties to reflect the tree structure.