Why do we complete a transfer in a different way based on the resource types?

[ndr-brt]

After a transfer has been started, the manager iterates over it to see if has been completed or not, it does that using a StatusChecker service.

If no StatusChecker is available currently we have two different behavior described by this piece of code:

Connector/core/control-plane/transfer-core/src/main/java/org/eclipse/edc/connector/transfer/process/TransferProcessManagerImpl.java

Lines 504 to 511 in 7eee479

	if (transferProcess.getDataRequest().isManagedResources()) {
	monitor.warning(format("No checker found for process %s. The process will not advance to the COMPLETED state.", transferProcess.getId()));
	return false;
	} else {
	//no checker, transition the process to the COMPLETED state automatically
	transitionToCompleting(transferProcess);
	}
	return true;

why do we have different behavior based on different resource types (managed or not)?
My gut feeling would say that we shouldn't change the transfer status if we don't have any knowledge, leaving this duty to an external service that can do it by calling the /complete api on the management-api.

thoughts?