Base::prepareItemForGroupingByChannel

private function prepareItemForGroupingByChannel($array)
{
	Loader::includeModule('imconnector');
	$sourcesLabelMap = Connector::getListConnector();
	return array(
		$array['SOURCE_ID'] => array(
		'label' => isset($sourcesLabelMap[$array['SOURCE_ID']]) ? $sourcesLabelMap[$array['SOURCE_ID']] : 'Undefined',
		'value' => (int)$array['VALUE']
	));
}