Piwik\Http\ControllerResolver::createReportController PHP Method

    private function createReportController($module, $action, array &$parameters)
    {
        $report = ReportsProvider::factory($module, $action);
        if (!$report) {
            return null;
        }
        $parameters['report'] = $report;
        return array($this->createCoreHomeController(), 'renderReportWidget');
    }