code: public static function findByRelatedTableAndIds($strTable, array $arrIds, array $arrOptions=array())
  	{
  		$t = static::$strTable;
  		$objDatabase = Database::getInstance();
  
  		$objResult = $objDatabase->prepare("SELECT * FROM $t WHERE $t.id IN (SELECT pid FROM tl_opt_in_related WHERE relTable=? AND relId IN(" . implode(',', array_map('\intval', $arrIds)) . ")) ORDER BY $t.createdOn DESC")
  								 ->execute($strTable, $arrIds);
  
  		if ($objResult->numRows < 1)
  		{
  			return null;
  		}
  
  		$arrModels = array();
  		$objRegistry = Registry::getInstance();
  
  		while ($objResult->next())
  		{
  			/** @var OptInModel|Model $objOptIn */
  			if ($objOptIn = $objRegistry->fetch($t, $objResult->id))
  			{
  				$arrModels[] = $objOptIn;
  			}
  			else
  			{
  				$arrModels[] = new static($objResult->row());
  			}
  		}
  
  		return static::createCollection($arrModels, $t);
  	}
docs: Find opt-in tokens by their related table and ID
  
  @param string $strTable
  @param array  $arrIds
  @param array  $arrOptions
  
  @return Collection|OptInModel[]|OptInModel|null