Craft\AmForms_SettingsController::actionSaveSettings PHP Method

    public function actionSaveSettings()
    {
        $this->requirePostRequest();
        // Settings type
        $settingsType = craft()->request->getPost('settingsType', false);
        // Save settings!
        if ($settingsType) {
            $this->_saveSettings($settingsType);
        } else {
            craft()->userSession->setError(Craft::t('Couldn’t find settings type.'));
        }
        $this->redirectToPostedUrl();
    }