Instantiating an Object with the Same Object as an Argument?

[Adam D. Ruppe]

btw if you haven't seen my version of the gtk-d docs, check it 
out:

http://gtk-d.dpldocs.info/gtk.Adjustment.Adjustment.html

It does various cross-referencing the official versions don't, 
among other things. You can see the GtkAdjustment there is not 
linked, because it is the C version, whereas references to 
gtk.Adjustment are links to the D classes.