Commanded.Middleware.Uniqueness.Adapter.release_by_owner

You're seeing just the callback release_by_owner, go back to Commanded.Middleware.Uniqueness.Adapter module for more information.
Link to this callback

release_by_owner(key, owner, partition)

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Specs

release_by_owner(key :: term(), owner :: term(), partition :: term()) ::
  :ok | {:error, :unknown_error}

Releases a value record via key, owner, partition set