/// <summary>
/// Adds an external reference to the dictionary.
/// </summary>
protected void AddExternalReference(
NodeId sourceId,
NodeId referenceTypeId,
bool isInverse,
NodeId targetId,
IDictionary<NodeId, IList<IReference>> externalReferences)
{
// get list of references to external nodes.
IList<IReference> referencesToAdd = null;
if (!externalReferences.TryGetValue(sourceId, out referencesToAdd))
{
externalReferences[sourceId] = referencesToAdd = new List<IReference>();
}
// add reserve reference from external node.
ReferenceNode referenceToAdd = new ReferenceNode();
referenceToAdd.ReferenceTypeId = referenceTypeId;
referenceToAdd.IsInverse = isInverse;
referenceToAdd.TargetId = targetId;
referencesToAdd.Add(referenceToAdd);
}
