Descendants of this class should implement the {@link init()} method and call the
{@link makeSetting()} method for each of the measurable's settings.
For an example, see the {@link Piwik\Plugins\ExampleSettingsPlugin\MeasurableSettings} plugin.
$settingsProvider = new Piwik\Plugin\SettingsProvider(); // get this instance via dependency injection
$measurableSettings = $settingProvider->getMeasurableSettings($yourPluginName, $idsite, $idType = null);
$measurableSettings->yourSetting->getValue();