Gtk.TreeViewColumn.prototype.set_cell_data_func

function set_cell_data_func(cell_renderer:Gtk.CellRenderer, func:Gtk.TreeCellDataFunc):void {
    // Gjs wrapper for gtk_tree_view_column_set_cell_data_func()
}

Sets the Gtk.TreeCellDataFunc to use for the column. This function is used instead of the standard attributes mapping for setting the column value, and should set the value of tree_column's cell renderer as appropriate. func may be null to remove an older one.