registration parameter not sent in doStoreStateDocument

[jeremyVignelles]

In the StateDocument class, there is a registrationId optional parameter, but it does not seem to be sent to the server in this method:

client/src/Api/StateApiClient.php

Lines 98 to 111 in b39735b

	private function doStoreStateDocument($method, StateDocument $document)
	{
	$state = $document->getState();
	$this->doStoreDocument(
	$method,
	'activities/state',
	array(
	'activityId' => $state->getActivity()->getId()->getValue(),
	'agent' => $this->actorSerializer->serializeActor($state->getActor()),
	'stateId' => $state->getStateId(),
	),
	$document
	);
	}

Can the registrationId be sent when calling this method?

Spec : https://github.com/adlnet/xAPI-Spec/blob/master/xAPI-Communication.md#23-state-resource

If I understand correctly, this is required for the implementation to be conformant with cmi5 : https://github.com/AICC/CMI-5_Spec_Current/blob/quartz/cmi5_spec.md#101-overview

registration: Registration id representing the LMS learner enrollment in the course. This MUST match the registration used by the LMS at AU launch time.