or: #0000FF">=&gt;</span><span style="color: #000000"> </span><span style="color: #001080">audioVideo</span><span style="color: #000000">.</span><span style="color: #795E26">removeObserver</span><span style="color: #000000">(</span><span style="color: #001080">observer</span><span style="color: #000000">);</span>
<span style="color: #000000">  }, [</span><span style="color: #001080">audioVideo</span><span style="color: #000000">]);</span>

<span style="color: #000000">  </span><span style="color: #AF00DB">r