/// <summary>
/// Add the projection node with the given property name, property instance and target resource type, if required.
/// </summary>
/// <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 ProjectionNode.</returns>
internal ExpandedProjectionNode AddProjectionNode(string propertyName, ResourceProperty property, ResourceType targetResourceType)
{
// find out if there exists another node with the given property name.
ProjectionNode node = this.FindNode(propertyName);
if (node == null || !ExpandedProjectionNode.ApplyPropertyToExistingNode(node, property, targetResourceType))
{
// just create a simple projection node for it
node = new ProjectionNode(propertyName, property, targetResourceType);
this.AddNode(node);
}
return(node as ExpandedProjectionNode);
}
