_class has no method 'camelize'</span>

Ember<span class="token punctuation">.</span>String<span class="token punctuation">.</span><span class="token function">camelize</span><span class="token punctuation">(</span><span class="token string">"my_cool_class"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">//=> "myCoolClass"</span>
<span aria-hidden="true" class="line-numbers-rows"><a href="#C4_L1" id=C4_L1></a><a href="#C4_L2" id=C4_L2></a><a