public override PathMatch Matches(PathDefinitionIterator definitionSteps, PathIterator step)
 {
     InvocationCount++;
     DefinitionIterator = definitionSteps;
     PathIterator       = step;
     return(Result);
 }
 public override IViewModel[] GetDescendants(
     PathDefinitionIterator definitionSteps,
     IViewModel rootVM,
     bool onlyLoaded
     )
 {
     throw new NotSupportedException();
 }