TWX 9.1 Advanced Grids Samples File

How may I get Advanced Grids Samples File. Help says to download "GridAdvancedExampleEntities-V4.0.xml from the PTC Software Downloads page under ThingWorx Foundation", but there is an extension available only "Grid-Advanced-Extension-4-2-2". After the installation neither new things nor mashups appear. 

Actually, I am looking for examples for widget's Configuration property (JSON format).