 
            Comment #11 on issue 113 by tudor.gi...@gmail.com: Roassal should support lazy edges when used through the Mondrian API http://code.google.com/p/moose-technology/issues/detail?id=113
furthermore, this should work as well:
edge := view edge: #edge from: 1 to: 2. view edge: #edge from: 2 to: 1. view node: 1. view node: 2. view treeLayout userDefinedEdges: {edge}
This was achieved in the original Mondrian by having a Future object implementation.