title: Get specific item in model QML
body: <p>I can recover an element in my model:</p>
  
  <pre><code>property var model: [
  { title: i18n.tr("Standard"), descr: i18n.tr("Style by default"), style:"default" },
  { title: i18n.tr("None"), descr: i18n.tr("Icons without style", style:"none" }
  ]
  
  ListItem.ItemSelector {
      id: styleIconList
      model: settingsColumn.model
      delegate: OptionSelectorDelegate { 
                  property var item: model.modelData ? model.modelData : model
                  text: item.title
                  subText: item.descr
              }
      onSelectedIndexChanged: {
          launchermodular.settings.iconStyle = model.get(selectedIndex).style //here is problem
      }
  }
  </code></pre>
  
  <p>Can you tell me how?</p>
  
  <p>Thank you</p>