Get number of lookups in prototype chain?
<p>Can we get lookup count for object3.x? </p>

<p>First - look into owned property - no x</p>

<p>Second  - look into prototype object of object3 ->object2 - no x</p>

<p>Third - look into prototype object of object2 -> object 1 - x defined - yes</p>

<pre><code>object1 = {x:1};
object2 = Object.create(object1);
object2.y = 2;
object3 = Object.create(object2);
object3.z = 3;

object1.x; // lookup count = 1
object2.x; // lookup count = 2
object3.x; // lookup count = 3
</code></pre>
