public void nestedDistanceMatrixAndUnaryOp() {
DoubleArrayVector vector = new DoubleArrayVector(5,10,3,2,1);
DistanceMatrix matrix = new DistanceMatrix(vector);
System.out.println(Deparse.deparseExp(null, matrix));
Vector negative = new R$primitive$$minus$deferred_d(matrix, AttributeMap.EMPTY);
DeferredMean mean = new DeferredMean(negative, AttributeMap.EMPTY);
DeferredGraph graph = new DeferredGraph(mean);
DeferredJitter jitter = new DeferredJitter();
JittedComputation computation = jitter.compile(graph.getRoot());