Network::onStartWriting

static function onStartWriting($params)
{
	if ($params['BOT_ID'] == $params['DIALOG_ID'])
	{
		$params['DIALOG_ID'] = (string)$params['USER_ID'];
	}

	if (!static::checkTypingRestriction($params))
	{
		return false;
	}

	return static::clientStartWriting($params);
}