/// <summary>
/// Apply projection for the given property to the parent projection node.
/// </summary>
/// <param name="parentNode">The parent node which the new node will be added to.</param>
/// <param name="propertyName">Name of the property that needs to be projected.</param>
/// <param name="property">ResourceProperty instance containing information about the property - this will be null for open properties.</param>
/// <param name="targetResourceType">ResourceType instance on which the property needs to be expanded.</param>
/// <returns>A new or an existing instance of the ExpandedProjectionNode for the given property.</returns>
private static ExpandedProjectionNode ApplyProjectionForProperty(ExpandedProjectionNode parentNode, string propertyName, ResourceProperty property, ResourceType targetResourceType)
{
Debug.Assert(parentNode != null, "parentNode != null");
Debug.Assert(!string.IsNullOrEmpty(propertyName), "!string.IsNullOrEmpty(propertyName)");
Debug.Assert(targetResourceType != null, "targetResourceType != null");
var childNode = parentNode.AddProjectionNode(propertyName, property, targetResourceType);
Debug.Assert(
childNode == null || childNode.ResourceType == property.ResourceType,
"If we're traversing over a nav. property it's resource type must match the resource type of the expanded segment.");
return childNode;
}
