This sample demonstrates usage of the EXT_structural_metadata extension for storing a property table with metadata that is looked up based on feature IDs.
The structure and entities of the metadata in this example are the same as in the FeatureIdAttributeAndPropertyTable example. But in this case, a single property table is associated with the feature IDs for both mesh primitives, showing that it is possible to re-use property tables across multiple primitives in a single glTF asset.
This example can be viewed with the common sandcastle code.