CTaskRestService::_parseReturnValue

static function _parseReturnValue($className, $methodName, $returnValue, $params)
{
	if(is_callable($className.'::postProcessRestRequest'))
	{
		$returnValue = $className::postProcessRestRequest($methodName, $returnValue, $params);
	}

	CTaskAssert::assert(isset(self::$arMethodsMetaInfo[$className][$methodName]));
	$parsedValue = null;

	$arDateFields = array();
	if (isset(self::$arManifests[$className]['REST: date fields']))
		$arDateFields = self::$arManifests[$className]['REST: date fields'];

	$arMethodMetaInfo = self::$arMethodsMetaInfo[$className][$methodName];

	// Function returns an array of file ids?
	if (
		isset($arMethodMetaInfo['fileIdsReturnValue'])
		&& ($arMethodMetaInfo['fileIdsReturnValue'] === true)
		&& is_array($returnValue)
	)
	{
		$parsedValue = array();
		foreach ($returnValue as &$fileId)
			$parsedValue[] = '/bitrix/components/bitrix/tasks.task.detail/show_file.php?fid=' . (int) $fileId;
		unset($fileId);
	}
	else if (is_array($returnValue) && isset($arMethodMetaInfo['allowedKeysInReturnValue']))
	{
		// add legal aggregated columns in result array
		if(is_array($arMethodMetaInfo['allowedAggregations']))
		{
			if(is_array($arMethodMetaInfo['allowedValuesInAggregation']))
				$fields = $arMethodMetaInfo['allowedValuesInAggregation'];
			else
				$fields = $arMethodMetaInfo['allowedKeysInReturnValue'];

			if(is_array($fields))
			{
				$aggrCombos = static::getAllowedAggregateCombos($arMethodMetaInfo['allowedAggregations'], $fields);
				$arMethodMetaInfo['allowedKeysInReturnValue'] = array_merge($arMethodMetaInfo['allowedKeysInReturnValue'], $aggrCombos);
			}
		}

		if (
			isset($arMethodMetaInfo['collectionInReturnValue'])
			&& ($arMethodMetaInfo['collectionInReturnValue'] === true)
		)
		{
			$parsedValue = array();
			foreach ($returnValue as $valueToBeFiltered)
			{
				$parsedValue[] = self::_filterArrayByAllowedKeys(	// Additionally converts datetime fields
					$valueToBeFiltered,
					$arMethodMetaInfo['allowedKeysInReturnValue'],
					$arDateFields
				);
			}

		}
		else
		{
			$parsedValue = self::_filterArrayByAllowedKeys(	// Additionally converts datetime fields
				$returnValue,
				$arMethodMetaInfo['allowedKeysInReturnValue'],
				$arDateFields
			);
		}
	}
	else
	{
		$parsedValue = $returnValue;
	}

	return ($parsedValue);
}