How to override createShapeElement method of Node class in Graphiti.js?
<p>I want to create a node, I am creating it as </p>

<pre><code>var shape = new graphiti.shape.node.Node();
</code></pre>

<p>But it gives me error message: "<code>uncaught exception: Inherited class [undefined] must override the abstract method createShapeElement</code>".</p>

<p>How can I solve this problem?</p>
