public function startApplicableChecker($className)
    {
        if (isset($this->applicableCheckers[$className])) {
            $this->applicableCheckers[$className]['startTime'] = microtime(true);
        } else {
            $this->applicableCheckers[$className] = ['startTime' => microtime(true), 'time' => 0, 'count' => 0];
        }
        $this->lastApplicableChecker = $className;
    }