Base::getContentBlocks

public function getContentBlocks(): ?array
{
	$result = [
		'messageBlock' => $this->getSmsMessageContentBlock(),
		'messageSentViaBlock' => $this->getMessageSentViaContentBlock(),
	];

	$client = $this->buildClientBlock(Client::BLOCK_WITH_FORMATTED_VALUE);
	if (isset($client))
	{
		$result['client'] = $client;
	}

	$user = $this->buildUserContentBlock();
	if (isset($user))
	{
		$result['user'] = $user;
	}

	return $result;
}