Relation::getByEntity

static function getByEntity($sourceEntityTypeId, $sourceEntityId, $destinationEntityTypeId, $destinationEntityId='')
{
	$filter = [];
	if($sourceEntityTypeId<>'')
		$filter['=SRC_ENTITY_TYPE_ID'] = $sourceEntityTypeId;
	if($sourceEntityId<>'')
		$filter['=SRC_ENTITY_ID'] = $sourceEntityId;
	if($destinationEntityTypeId<>'')
		$filter['=DST_ENTITY_TYPE_ID'] = $destinationEntityTypeId;
	if($destinationEntityId<>'')
		$filter['=DST_ENTITY_ID'] = $destinationEntityId;


	return EntityB24IntegrationRelationTable::getRow([
		'filter' => [$filter]
	]);
}