There is currently now way from AvroSchemaManager to extract the ID of the message

[tmnd1991]

Scenario Summary

The connector underlying the manager knows how to extract the Id, but such functionality is not exposed from the Manager. Users are not directly exposed to the connector instance, but might want to obtain the id, therefore I think we should expose a "proxy" method to do so.

Proposed Solution

Add the method(s) to the AvroSchemaManager interface.