nvokes the <code>invoke</code> method which is part of the <a href="https://api.emberjs.com/classes/Ember.Array.html#method_invoke">EmberArray</a> API.  <code>invoke</code> will execute a method on each object in the Array if the method exists on that object.</p>
<p>Reload your web browser to ensure that there are no errors and the behavior described above occurs.</p>
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