The type of data stored in the row.
Checkbox state (with showCheckboxWihoutExtraColumn or a checkbox column).
The child rows, undefined for leaves.
Your object. Column values are read from it (columnDef.property).
Depth in the tree: 0 = top level.
Are the children visible?
Internal, set by the filter: the row or one of its descendants matches (also below collapsed rows).
The parent row, undefined on the top level.
Marker to recognise tree rows across package boundaries (see isTreeRow()).
Represents a (table) row in a tree structure. It's a container object for T with additional tree node information.