Piwik\Plugin\Menu::checkisValidCallable PHP Метод

    private function checkisValidCallable($module, $action)
    {
        if (!Development::isEnabled()) {
            return;
        }
        $prefix = 'Menu item added in ' . get_class($this) . ' will fail when being selected. ';
        if (!is_string($action)) {
            Development::error($prefix . 'No valid action is specified. Make sure the defined action that should be executed is a string.');
        }
        $reportAction = lcfirst(substr($action, 4));
        if (ReportsProvider::factory($module, $reportAction)) {
            return;
        }
        $controllerClass = '\\Piwik\\Plugins\\' . $module . '\\Controller';
        if (!Development::methodExists($controllerClass, $action)) {
            Development::error($prefix . 'The defined action "' . $action . '" does not exist in ' . $controllerClass . '". Make sure to define such a method.');
        }
        if (!Development::isCallableMethod($controllerClass, $action)) {
            Development::error($prefix . 'The defined action "' . $action . '" is not callable on "' . $controllerClass . '". Make sure the method is public.');
        }
    }