title: What does the x-coredata path mean when I 'po' the core data object in lldb?
body: <p>When I print an object description for a core data object in lldb I'll sometimes get the following object description:</p>
  
  <p>(lldb) po my_challenge_object
   (entity: Challenge; id: 0x170433460 &lt;<strong>x-coredata:///Challenge/t52BD558C-A8FE-4064-A8BE-217A837521E52</strong>> ; data: {...})</p>
  
  <p>If I print the same object at a later time, I'll sometimes see the 'x-coredata' path change.</p>
  
  <p> (entity: Challenge; id: 0x170433460 &lt;<strong>x-coredata://50232AB5-7372-4628-9F00-51BDB1A5C96D/Challenge/t52BD558C-A8FE-4064-A8BE-217A837521E52</strong>> ; data: {...})</p>
  
  <p>My question is, what does that path mean and why is it changing? What does the addition of '50232AB5-7372-4628-9F00-51BDB1A5C96D' tell me about my object, in this case?</p>