JsonField::formatResult

private function formatResult(array $fields)
{
	foreach ($fields as &$field)
	{
		if (is_array($field))
		{
			$field = $this->formatResult($field);
		}
		elseif (CheckDateTime($field))
		{
			$field = new MainTypeDateTime($field);
		}
	}

	return $fields;
}