NorskManager.notifyMigrationGetState() method
The propose step (Phase F): ask the SOURCE what state it would hand over, before any target has been placed. The source’s answer — a payload, or a refusal — comes back asynchronously on the event stream as migrationState; a refusal ends the migration with nothing started anywhere.
Signature:
notifyMigrationGetState(sourceJobKey: ActiveJobKey, migrationId: string): Promise<void>;