addMemory
Adds explicit memories directly to the memory service, scoped to the current session's app/user ids.
This is for memory services that support direct memory writes, in addition to the event-based generation done by addSessionToMemory / addEventsToMemory.
Parameters
memories
Explicit memory items to add.
customMetadata
Optional, portable metadata forwarded to the memory service.
Throws
if no memory service is configured on the invocation.