Piwik\Columns\Dimension::getId PHP Метод

    public function getId()
    {
        $className = get_class($this);
        // parse plugin name & dimension name
        $regex = "/Piwik\\\\Plugins\\\\([^\\\\]+)\\\\" . self::COMPONENT_SUBNAMESPACE . "\\\\([^\\\\]+)/";
        if (!preg_match($regex, $className, $matches)) {
            throw new Exception("'{$className}' is located in the wrong directory.");
        }
        $pluginName = $matches[1];
        $dimensionName = $matches[2];
        return $pluginName . '.' . $dimensionName;
    }

 /**
  * @param Dimension|null $lhs
  * @param Dimension|null $rhs
  * @return bool
  */
 private static function areDimensionsNotEqualAndNotNull($lhs, $rhs)
 {
     return !empty($lhs) && !empty($rhs) && $lhs->getId() != $rhs->getId();
 }