[flexcoders] Show a lazy loading object in a tree

[Artur Kordowski]

Hi,
 
in current project we are using an FDS Data Management destination to get
data. Now I would like to show this object in a tree control. The problem on
this point is, that the root nodes are displayed as a leaf, not as a branch.
But I need to have the root nodes as a branch to get the subobjects by open
the branch/node. Can any one help me how I can make it, that the root nodes
are displayed as a branch, in this case?
 
Cheers, Artur