[flexcoders] Pin a single child element to the bottom of a parent VBox?

[Ian Skinner]

Is this possible in a standard 'vertical' layout VBox, or does one have 
to go 'absolute' layout?

I have a VBox displaying 1-N child boxes, and I want one to be pinned to 
the bottom.  Is this possible or do I need to wrap an absolute layout 
around this?