Gtk.CellAreaBox.prototype.pack_start

function pack_start(renderer:Gtk.CellRenderer, expand:Boolean, align:Boolean, fixed:Boolean):void {
    // Gjs wrapper for gtk_cell_area_box_pack_start()
}

Adds renderer to box, packed with reference to the start of box.

The renderer is packed after any other Gtk.CellRenderer packed with reference to the start of box.

Since 3.0

renderer: the Gtk.CellRenderer to add
expand: whether renderer should receive extra space when the area receives more than its natural size
align: whether renderer should be aligned in adjacent rows
fixed: whether renderer should have the same size in all rows