private void HandleGetFilesReferencedBy(string fileName, TopLevelOrRecursive depth, List<string> referencedFiles) { var extension = FileManager.GetExtension(fileName); if (extension == "atlas") { var associatedPng = FileManager.RemoveExtension(fileName) + ".png"; referencedFiles.Add(associatedPng); // Extend this in the future if we support multiple pages, etc } }