// FIXME: why call new Schedule here?
/*Schedule schedule = */new Schedule();
// Expand the super node with adjacent nodes contained
// within it.
Edge edge = (Edge) childGraph.edges().iterator().next();
ptolemy.graph.Node source = edge.source();
ptolemy.graph.Node sink = edge.sink();
SymbolicScheduleElement first = _expandAPGAN(childGraph,
source, strategy);
SymbolicScheduleElement second = _expandAPGAN(childGraph, sink,