return null;
}
XRootStep root = new XRootStep(runtime);
if (step.subpipeline().size() == 0) {
// I need to instantiate an atomic step to replace this declaration in the
// pipeline I'm about to create.
Step atomicReplacement = new Step(runtime, step.getNode(),step.getDeclaredType(),step.getName());
atomicReplacement.setDeclaration(step);