title: How to reference the calling object in QML
body: <p>Is there a way to get a reference to the calling object in QML? I'm looking at something which is equivalent to the 'this' pointer in QML</p>
  
  <p>Example:
  Say I have a component which serves as a backend for a graphical element such as a seekbar for a video player. This backend will take in the current and total durations of the video as input and periodically provide an update to the graphical seekbar. 
  Now if there is a signal handler in this backend for a signal which sends current and total durations , it might look something like this:</p>
  
  <pre><code>Connections {
    target: sender //this
  
    onSendSeekUpdate()
    {
      //do something
    } 
  }
  </code></pre>
  
  <p>Of course I guess this can be implemented in C++ and then imported into QML. But I was just wondering if QML also supports this? So that I can straight away write such hooks in QML.</p>