public void TestConstruction()
{
var obj = new ClassWithStructs();
var container = new ModelContainer();
container.NodeBuilder.PrimitiveTypes.Add(typeof(PrimitiveStruct));
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Helper.PrintModelContainerContent(container, model);
// Members should never have children
Assert.That(model.GetChild("PrimitiveStruct").Children.Count, Is.EqualTo(0));
// Primitive struct has been registered as a primitive type, so it should not hold a reference.
Assert.Null(model.GetChild("PrimitiveStruct").Content.Reference);
// Members should never have children.
Assert.That(model.GetChild("NestedStruct").Children.Count, Is.EqualTo(0));
// NestedStruct members should be accessible via a reference.
Assert.NotNull(model.GetChild("NestedStruct").Content.Reference);
// The referenced node must exist.
var structNode = model.GetChild("NestedStruct").Content.Reference.AsObject.TargetNode;
Assert.NotNull(structNode);
// It should have two children, as the NestedStruct has.
Assert.That(structNode.Children.Count, Is.EqualTo(2));
// Similarly, the Struct member of the NestedStruct should hold a reference.
Assert.NotNull(structNode.GetChild("Struct").Content.Reference);
// The referenced node must exist.
structNode = structNode.GetChild("Struct").Content.Reference.AsObject.TargetNode;
Assert.NotNull(structNode);
// It should have two children, as the SimpleStruct has.
Assert.That(structNode.Children.Count, Is.EqualTo(2));
// Finally, we run the ModelConsistencyCheckVisitor to detect potential other issues.
Helper.ConsistencyCheck(container, obj);
}
public void TestViewModelUpdate()
{
var obj = new ClassWithStructs();
var container = new ModelContainer();
container.NodeBuilder.PrimitiveTypes.Add(typeof(PrimitiveStruct));
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Helper.PrintModelContainerContent(container, model);
// Modify direct struct via Quantum, check value on actual object
var structNode = container.GetModelNode(((ObjectReference)model.GetChild("NestedStruct").Content.Reference).TargetGuid);
structNode.GetChild("SecondValue").Content.Value = 15;
Assert.That(obj.NestedStruct.SecondValue, Is.EqualTo(15));
// Modify nested struct via Quantum, check value on actual object
structNode = container.GetModelNode(((ObjectReference)structNode.GetChild("Struct").Content.Reference).TargetGuid);
structNode.GetChild("FirstValue").Content.Value = 20;
Assert.That(obj.NestedStruct.Struct.FirstValue, Is.EqualTo(20));
// Modify direct struct on actual value, check value via Quantum
obj.NestedStruct = new NestedStruct {
Struct = new SimpleStruct {
FirstValue = 30
}, SecondValue = 10
};
// TODO: this is needed to refresh the references in the node - maybe we could add a Refresh method in the IModelNode?
model = container.GetModelNode(obj);
structNode = container.GetModelNode(((ObjectReference)model.GetChild("NestedStruct").Content.Reference).TargetGuid);
Assert.That(structNode.GetChild("SecondValue").Content.Value, Is.EqualTo(10));
structNode = container.GetModelNode(((ObjectReference)structNode.GetChild("Struct").Content.Reference).TargetGuid);
Assert.That(structNode.GetChild("FirstValue").Content.Value, Is.EqualTo(30));
// Finally, we run the ModelConsistencyCheckVisitor to detect potential other issues.
Helper.ConsistencyCheck(container, obj);
}
public void TestPrimitiveItemUpdate()
{
var obj = new ClassWithDictionaries();
var container = new ModelContainer();
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Console.WriteLine(model.PrintHierarchy());
((Dictionary <string, int>)model.GetChild("StringIntDic").Content.Value)["b"] = 42;
((Dictionary <string, int>)model.GetChild("StringIntDic").Content.Value).Add("d", 26);
Assert.That(obj.StringIntDic.Count, Is.EqualTo(4));
Assert.That(obj.StringIntDic["b"], Is.EqualTo(42));
Assert.That(obj.StringIntDic["d"], Is.EqualTo(26));
}
public void TestPrimitiveItemUpdate()
{
var obj = new ClassWithLists();
var container = new ModelContainer();
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Console.WriteLine(model.PrintHierarchy());
((List <int>)model.GetChild("IntList").Content.Value)[1] = 42;
((List <int>)model.GetChild("IntList").Content.Value).Add(26);
Assert.That(obj.IntList.Count, Is.EqualTo(4));
Assert.That(obj.IntList[1], Is.EqualTo(42));
Assert.That(obj.IntList[3], Is.EqualTo(26));
Helper.ConsistencyCheck(container, obj);
}
public void TestPrimitiveItemUpdate()
{
var obj = new ClassWithDictionaries();
var container = new ModelContainer();
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Helper.PrintModelContainerContent(container, model);
((Dictionary <string, int>)model.GetChild("StringIntDic").Content.Value)["b"] = 42;
((Dictionary <string, int>)model.GetChild("StringIntDic").Content.Value).Add("d", 26);
Assert.That(obj.StringIntDic.Count, Is.EqualTo(4));
Assert.That(obj.StringIntDic["b"], Is.EqualTo(42));
Assert.That(obj.StringIntDic["d"], Is.EqualTo(26));
Helper.PrintModelContainerContent(container, model);
Helper.ConsistencyCheck(container, obj);
}
public void TestMultipleNestedStruct()
{
var obj = new SimpleClassWithNestedStruct(1.0, "test", 5.0, "inner value");
Assert.That(obj.Struct.FirstValue, Is.EqualTo(1.0));
Assert.That(obj.Struct.SecondValue, Is.EqualTo("test"));
Assert.That(obj.Struct.InnerStruct.FirstValue, Is.EqualTo(5.0));
Assert.That(obj.Struct.InnerStruct.SecondValue, Is.EqualTo("inner value"));
var container = new ModelContainer();
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Console.WriteLine(model.PrintHierarchy());
var structNode = model.GetChild("Struct").Content.Reference.AsObject.TargetNode;
structNode.GetChild("FirstValue").Content.Value = 2.0;
structNode.GetChild("SecondValue").Content.Value = "new value";
structNode = structNode.GetChild("InnerStruct").Content.Reference.AsObject.TargetNode;
structNode.GetChild("FirstValue").Content.Value = 7.0;
structNode.GetChild("SecondValue").Content.Value = "new inner value";
Assert.That(obj.Struct.FirstValue, Is.EqualTo(2.0));
Assert.That(obj.Struct.SecondValue, Is.EqualTo("new value"));
Assert.That(obj.Struct.InnerStruct.FirstValue, Is.EqualTo(7.0));
Assert.That(obj.Struct.InnerStruct.SecondValue, Is.EqualTo("new inner value"));
}
public void TestDoubleReferenceMemberDataUpdate()
{
var doubleRef = new DoubleReferenceClass(new SimpleObject());
var container = new ModelContainer();
IModelNode model = container.GetOrCreateModelNode(doubleRef, doubleRef.GetType());
doubleRef.Object1.Name = "New Name";
Assert.That(doubleRef.Object1.Name, Is.EqualTo("New Name"));
Assert.That(doubleRef.Object2.Name, Is.EqualTo("New Name"));
var object1TargetNode = ((ObjectReference)model.GetChild("Object1").Content.Reference).TargetNode;
var object2TargetNode = ((ObjectReference)model.GetChild("Object2").Content.Reference).TargetNode;
Assert.That(object1TargetNode.GetChild("Name").Content.Value, Is.EqualTo("New Name"));
Assert.That(object2TargetNode.GetChild("Name").Content.Value, Is.EqualTo("New Name"));
}
public void TestSimpleContent()
{
var obj = new SimpleClass(1, "test");
Assert.That(obj.FirstValue, Is.EqualTo(1));
Assert.That(obj.SecondValue, Is.EqualTo("test"));
var container = new ModelContainer();
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Console.WriteLine(model.PrintHierarchy());
model.GetChild("FirstValue").Content.Value = 2;
model.GetChild("SecondValue").Content.Value = "new value";
Assert.That(obj.FirstValue, Is.EqualTo(2));
Assert.That(obj.SecondValue, Is.EqualTo("new value"));
}
public void TestConstruction()
{
var obj = new ClassWithStructs();
var container = new ModelContainer();
container.NodeBuilder.PrimitiveTypes.Add(typeof(PrimitiveStruct));
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Console.WriteLine(model.PrintHierarchy());
Assert.That(model.GetChild("NestedStruct").Children.Count, Is.EqualTo(2));
Assert.That(model.GetChild("NestedStruct").GetChild("Struct").Children.Count, Is.EqualTo(2));
Assert.That(model.GetChild("PrimitiveStruct").Children.Count, Is.EqualTo(0));
var visitor = new ModelConsistencyCheckVisitor(container.NodeBuilder);
visitor.Check((ModelNode)model, obj, typeof(ClassWithStructs), true);
foreach (var node in container.Models)
{
visitor.Check((ModelNode)node, node.Content.Value, node.Content.Type, true);
}
}
public void TestPrimitiveItemUpdate()
{
var obj = new ClassWithLists();
var container = new ModelContainer();
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Console.WriteLine(model.PrintHierarchy());
((List <int>)model.GetChild("IntList").Content.Value)[1] = 42;
((List <int>)model.GetChild("IntList").Content.Value).Add(26);
Assert.That(obj.IntList.Count, Is.EqualTo(4));
Assert.That(obj.IntList[1], Is.EqualTo(42));
Assert.That(obj.IntList[3], Is.EqualTo(26));
var visitor = new ModelConsistencyCheckVisitor(container.NodeBuilder);
visitor.Check((ModelNode)model, obj, typeof(ClassWithLists), true);
foreach (var node in container.Models)
{
visitor.Check((ModelNode)node, node.Content.Value, node.Content.Type, true);
}
}
public void TestConstruction()
{
var obj = new ClassWithDictionaries();
var container = new ModelContainer();
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Console.WriteLine(model.PrintHierarchy());
foreach (var guid in container.Guids)
{
var node = container.GetModelNode(guid);
if (model != node)
{
Console.WriteLine(node.PrintHierarchy());
}
}
Assert.That(model.GetChild("StringIntDic").Children.Count, Is.EqualTo(0));
Assert.That(model.GetChild("StringIntDic").Content.Value, Is.SameAs(obj.StringIntDic));
Assert.That(model.GetChild("StringIntDic").Content.IsReference, Is.False);
Assert.That(model.GetChild("StringClassDic").Children.Count, Is.EqualTo(0));
Assert.That(model.GetChild("StringClassDic").Content.Value, Is.SameAs(obj.StringClassDic));
Assert.That(model.GetChild("StringClassDic").Content.Reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
var enumerator = obj.StringClassDic.GetEnumerator();
foreach (var reference in (ReferenceEnumerable)model.GetChild("StringClassDic").Content.Reference)
{
enumerator.MoveNext();
var keyValuePair = enumerator.Current;
Assert.That(reference.Index, Is.EqualTo(keyValuePair.Key));
Assert.That(reference.ObjectValue, Is.EqualTo(keyValuePair.Value));
}
//Assert.That(model.GetChild("SimpleStructList").Children.Count, Is.EqualTo(0));
//Assert.That(model.GetChild("SimpleStructList").Content.Value, Is.SameAs(obj.SimpleStructList));
//Assert.That(model.GetChild("SimpleStructList").Content.Reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
//Assert.That(model.GetChild("NestedStructList").Children.Count, Is.EqualTo(0));
//Assert.That(model.GetChild("NestedStructList").Content.Value, Is.SameAs(obj.NestedStructList));
//Assert.That(model.GetChild("NestedStructList").Content.Reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
//Assert.That(model.GetChild("ListOfSimpleStructLists").Children.Count, Is.EqualTo(0));
//Assert.That(model.GetChild("ListOfSimpleStructLists").Content.Value, Is.SameAs(obj.ListOfSimpleStructLists));
//Assert.That(model.GetChild("ListOfSimpleStructLists").Content.Reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
//foreach (var reference in (ReferenceEnumerable)model.GetChild("ListOfSimpleStructLists").Content.Reference)
//{
// Assert.That(reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
//}
//Assert.That(model.GetChild("ListOfNestedStructLists").Children.Count, Is.EqualTo(0));
//Assert.That(model.GetChild("ListOfNestedStructLists").Content.Value, Is.SameAs(obj.ListOfNestedStructLists));
//Assert.That(model.GetChild("ListOfNestedStructLists").Content.Reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
//foreach (var reference in (ReferenceEnumerable)model.GetChild("ListOfNestedStructLists").Content.Reference)
//{
// Assert.That(reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
//}
//Assert.That(container.GetModelNode(obj.ClassList[0]), !Is.Null);
//Assert.That(container.Guids.Count(), Is.EqualTo(10));
}
public void TestStructItemUpdate()
{
var obj = new ClassWithLists();
var container = new ModelContainer();
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Helper.PrintModelContainerContent(container, model);
var objRef = ((ReferenceEnumerable)model.GetChild("SimpleStructList").Content.Reference).First();
objRef.TargetNode.GetChild("SecondValue").Content.Value = 32;
Helper.PrintModelContainerContent(container, model);
Assert.That(obj.SimpleStructList[0].SecondValue, Is.EqualTo(32));
Helper.ConsistencyCheck(container, obj);
}
public void TestListOfNestedStructListsUpdate()
{
var obj = new ClassWithLists();
var container = new ModelContainer();
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Helper.PrintModelContainerContent(container, model);
var listRef = ((ReferenceEnumerable)model.GetChild("ListOfNestedStructLists").Content.Reference).Last();
var objRef = ((ReferenceEnumerable)listRef.TargetNode.Content.Reference).Last();
var structNode = container.GetModelNode(((ObjectReference)objRef.TargetNode.GetChild("Struct").Content.Reference).TargetGuid);
structNode.GetChild("SecondValue").Content.Value = 32;
Helper.PrintModelContainerContent(container, model);
Assert.That(obj.ListOfNestedStructLists[1][0].Struct.SecondValue, Is.EqualTo(32));
Helper.ConsistencyCheck(container, obj);
}
public void TestNestedStructItemUpdate()
{
var obj = new ClassWithLists();
var container = new ModelContainer();
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Helper.PrintModelContainerContent(container, model);
var objRef = ((ReferenceEnumerable)model.GetChild("NestedStructList").Content.Reference).First();
var structNode = container.GetModelNode(((ObjectReference)objRef.TargetNode.GetChild("Struct").Content.Reference).TargetGuid);
structNode.GetChild("SecondValue").Content.Value = 32;
Helper.PrintModelContainerContent(container, model);
Assert.That(obj.NestedStructList[0].Struct.SecondValue, Is.EqualTo(32));
var visitor = new ModelConsistencyCheckVisitor(container.NodeBuilder);
visitor.Check((ModelNode)model, obj, typeof(ClassWithLists), true);
Helper.ConsistencyCheck(container, obj);
}
public void TestNestedStructItemUpdate()
{
var obj = new ClassWithLists();
var container = new ModelContainer();
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Console.WriteLine(model.PrintHierarchy());
var objRef = ((ReferenceEnumerable)model.GetChild("NestedStructList").Content.Reference).First();
objRef.TargetNode.GetChild("Struct").GetChild("SecondValue").Content.Value = 32;
Assert.That(obj.NestedStructList[0].Struct.SecondValue, Is.EqualTo(32));
var visitor = new ModelConsistencyCheckVisitor(container.NodeBuilder);
visitor.Check((ModelNode)model, obj, typeof(ClassWithLists), true);
foreach (var node in container.Models)
{
visitor.Check((ModelNode)node, node.Content.Value, node.Content.Type, true);
}
}
public void TestDoubleReferenceAtConstruction()
{
var doubleRef = new DoubleReferenceClass(new SimpleObject());
var container = new ModelContainer();
IModelNode model = container.GetOrCreateModelNode(doubleRef, doubleRef.GetType());
Assert.That(doubleRef.Object1, Is.EqualTo(doubleRef.Object2));
Assert.That(model.GetChild("Object1").Content.Value, Is.EqualTo(doubleRef.Object1));
Assert.That(model.GetChild("Object2").Content.Value, Is.EqualTo(doubleRef.Object2));
Assert.That(model.GetChild("Object1").Content.IsReference, Is.True);
Assert.That(model.GetChild("Object2").Content.IsReference, Is.True);
var object1TargetNode = ((ObjectReference)model.GetChild("Object1").Content.Reference).TargetNode;
var object2TargetNode = ((ObjectReference)model.GetChild("Object2").Content.Reference).TargetNode;
Assert.That(object1TargetNode, Is.EqualTo(object2TargetNode));
Assert.That(object1TargetNode.Content.Value, Is.EqualTo(doubleRef.Object1));
}
public void TestConstruction()
{
var obj = new ClassWithLists();
var container = new ModelContainer();
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Console.WriteLine(model.PrintHierarchy());
foreach (var guid in container.Guids)
{
var node = container.GetModelNode(guid);
if (model != node)
{
Console.WriteLine(node.PrintHierarchy());
}
}
Assert.That(model.GetChild("IntList").Children.Count, Is.EqualTo(0));
Assert.That(model.GetChild("IntList").Content.Value, Is.SameAs(obj.IntList));
Assert.That(model.GetChild("IntList").Content.IsReference, Is.False);
Assert.That(model.GetChild("ClassList").Children.Count, Is.EqualTo(0));
Assert.That(model.GetChild("ClassList").Content.Value, Is.SameAs(obj.ClassList));
Assert.That(model.GetChild("ClassList").Content.Reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
Assert.That(model.GetChild("SimpleStructList").Children.Count, Is.EqualTo(0));
Assert.That(model.GetChild("SimpleStructList").Content.Value, Is.SameAs(obj.SimpleStructList));
Assert.That(model.GetChild("SimpleStructList").Content.Reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
Assert.That(model.GetChild("NestedStructList").Children.Count, Is.EqualTo(0));
Assert.That(model.GetChild("NestedStructList").Content.Value, Is.SameAs(obj.NestedStructList));
Assert.That(model.GetChild("NestedStructList").Content.Reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
Assert.That(model.GetChild("ListOfSimpleStructLists").Children.Count, Is.EqualTo(0));
Assert.That(model.GetChild("ListOfSimpleStructLists").Content.Value, Is.SameAs(obj.ListOfSimpleStructLists));
Assert.That(model.GetChild("ListOfSimpleStructLists").Content.Reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
foreach (var reference in (ReferenceEnumerable)model.GetChild("ListOfSimpleStructLists").Content.Reference)
{
Assert.That(reference, Is.AssignableFrom(typeof(ObjectReference)));
}
Assert.That(model.GetChild("ListOfNestedStructLists").Children.Count, Is.EqualTo(0));
Assert.That(model.GetChild("ListOfNestedStructLists").Content.Value, Is.SameAs(obj.ListOfNestedStructLists));
Assert.That(model.GetChild("ListOfNestedStructLists").Content.Reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
foreach (var reference in (ReferenceEnumerable)model.GetChild("ListOfNestedStructLists").Content.Reference)
{
Assert.That(reference, Is.AssignableFrom(typeof(ObjectReference)));
}
Assert.That(container.GetModelNode(obj.ClassList[0]), !Is.Null);
Assert.That(container.Guids.Count(), Is.EqualTo(14));
var visitor = new ModelConsistencyCheckVisitor(container.NodeBuilder);
visitor.Check((ModelNode)model, obj, typeof(ClassWithLists), true);
foreach (var node in container.Models)
{
visitor.Check((ModelNode)node, node.Content.Value, node.Content.Type, true);
}
}
public void TestConstruction()
{
var obj = new ClassWithLists();
var container = new ModelContainer();
IModelNode model = container.GetOrCreateModelNode(obj, obj.GetType());
Helper.PrintModelContainerContent(container, model);
Assert.That(model.GetChild("IntList").Children.Count, Is.EqualTo(0));
Assert.That(model.GetChild("IntList").Content.Value, Is.SameAs(obj.IntList));
Assert.That(model.GetChild("IntList").Content.IsReference, Is.False);
Assert.That(model.GetChild("ClassList").Children.Count, Is.EqualTo(0));
Assert.That(model.GetChild("ClassList").Content.Value, Is.SameAs(obj.ClassList));
Assert.That(model.GetChild("ClassList").Content.Reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
Assert.That(model.GetChild("SimpleStructList").Children.Count, Is.EqualTo(0));
Assert.That(model.GetChild("SimpleStructList").Content.Value, Is.SameAs(obj.SimpleStructList));
Assert.That(model.GetChild("SimpleStructList").Content.Reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
Assert.That(model.GetChild("NestedStructList").Children.Count, Is.EqualTo(0));
Assert.That(model.GetChild("NestedStructList").Content.Value, Is.SameAs(obj.NestedStructList));
Assert.That(model.GetChild("NestedStructList").Content.Reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
Assert.That(model.GetChild("ListOfSimpleStructLists").Children.Count, Is.EqualTo(0));
Assert.That(model.GetChild("ListOfSimpleStructLists").Content.Value, Is.SameAs(obj.ListOfSimpleStructLists));
Assert.That(model.GetChild("ListOfSimpleStructLists").Content.Reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
foreach (var reference in model.GetChild("ListOfSimpleStructLists").Content.Reference.AsEnumerable)
{
Assert.That(reference, Is.AssignableFrom(typeof(ObjectReference)));
}
Assert.That(model.GetChild("ListOfNestedStructLists").Children.Count, Is.EqualTo(0));
Assert.That(model.GetChild("ListOfNestedStructLists").Content.Value, Is.SameAs(obj.ListOfNestedStructLists));
Assert.That(model.GetChild("ListOfNestedStructLists").Content.Reference, Is.AssignableFrom(typeof(ReferenceEnumerable)));
foreach (var reference in model.GetChild("ListOfNestedStructLists").Content.Reference.AsEnumerable)
{
Assert.That(reference, Is.AssignableFrom(typeof(ObjectReference)));
}
Assert.That(container.GetModelNode(obj.ClassList[0]), !Is.Null);
Assert.That(container.Guids.Count(), Is.EqualTo(18));
Helper.ConsistencyCheck(container, obj);
}
/// <summary>
/// Gets the child of the given node that matches the given name. If the given node holds an object reference, resolve the target of the reference
/// and gets the child of the target node that matches the given name.
/// </summary>
/// <param name="modelNode">The model node.</param>
/// <param name="name">The name of the child to retrieve.</param>
/// <returns></returns>
public static IModelNode GetChildThroughReferences(this IModelNode modelNode, string name)
{
var child = modelNode.GetChild(name) ?? modelNode.ResolveTarget().GetChild(name);
return(child);
}
/// <summary>
/// Retrieve the child node of the given <see cref="IModelNode"/> that matches the given name. If the node represents an object reference, it returns the referenced object.
/// </summary>
/// <param name="modelNode">The view model node to look into.</param>
/// <param name="name">The name of the child to retrieve.</param>
/// <returns>The child node that matches the given name, or the referenced node if the child hold an object reference, or <c>null</c> if no child matches.</returns>
public static IModelNode GetReferencedChild(this IModelNode modelNode, string name)
{
var child = modelNode.GetChild(name);
return(child != null?child.ResolveTarget() : null);
}