Piwik\Plugins\ExampleSettingsPlugin\SystemSettings::createBrowsersSetting PHP Method

    private function createBrowsersSetting()
    {
        $default = array('firefox', 'chromium', 'safari');
        return $this->makeSetting('browsers', $default, FieldConfig::TYPE_ARRAY, function (FieldConfig $field) {
            $field->title = 'Supported Browsers';
            $field->uiControl = FieldConfig::UI_CONTROL_MULTI_SELECT;
            $field->availableValues = array('firefox' => 'Firefox', 'chromium' => 'Chromium', 'safari' => 'safari');
            $field->description = 'The value will be only displayed in the following browsers';
        });
    }