title: "no ivar" on Xcode Instruments Leaks Cycles graph
body: <p>I am using instruments to check my app for leaks and I am trying to learn how to read the leaks cycles data.
  I am getting this graph on one of my leaks:</p>
  <p><img src="https://i.stack.imgur.com/eUjuX.png" alt="enter image description here" /></p>
  <p>What is the meaning if the graph ? What does it mean &quot;no ivar&quot;?</p>