ComputationTarget target = new ComputationTarget(targetSpecification, Currency.USD);
DependencyNode yieldCurveNode = new DependencyNode(targetSpecification);
yieldCurveNode.setFunction(new MockFunction(target));
yieldCurveNode.addOutputValue(new ValueSpecification(
"YieldCurve",
targetSpecification,
ValueProperties.builder().with("Curve", "Forward3M").with("Function", "someFunction").get()));
graph.addDependencyNode(yieldCurveNode);