Pods have unique identifiers so the metadata on the pod can be stored anywhere and then looked up by that unique pod id. Let's call this remote metadata.
Another way to store metadata is within the pod artifact itself. Let's call this embedded metadata.
In either case, we'd like to have easy access to read and write this metadata within SAIL Core. One way to do this for embedded metadata is to add a "Metadata" property to the Pod class.
For [UC-WISE], we're recommending that the metadata they want to work with be stored remotely and accessed through a service. This way they can run ahead with their designs and we can use that to inform the metadata mechanism we design for SAIL.