Adapter::performUpdate

public function performUpdate(int $id, array &$fields, array $compatibleOptions)
{
	$mainResult = $this->doPerformUpdate($id, $fields, $compatibleOptions);
	if ($mainResult->isSuccess())
	{
		foreach ($this->children as $child)
		{
			$child->performUpdate($id, $fields, $compatibleOptions);
		}
	}

	$data = $mainResult->getData();
	if (array_key_exists('return', $data))
	{
		return $data['return'];
	}
}