OrderDataSource::externalizeFilter

static function externalizeFilter(Filter $filter)
{
	$filterParams = $filter->getParams();
	$params = Filter::externalizeParams($filterParams);

	$semanticID = $filter->getExtraParam('semanticID', PhaseSemantics::UNDEFINED);
	if($semanticID !== PhaseSemantics::UNDEFINED)
	{
		$params['SEMANTIC_ID'] = $semanticID;
	}

	return array_merge($params, self::externalizeFilterChannel($filter));
}