title: Get EClass from EMF model instance class
body: <p>Given any <code>Class&lt;?&gt; clazz</code> object, is there an API to get the <code>EClass</code> whose model instances implement <code>clazz</code>? (i.e. the <code>eClass</code> for which <code>eClass.getInstanceClass().equals(clazz)</code> is true)</p>
  
  <p>If I had an <code>eObject</code>, I could simply call <code>eObject.eClass()</code> to get the <code>EClass</code>. But in my case I have no such instance. I only have a model instance class and need the associated <code>EClass</code> to call <code>EcoreUtil.create(eClass)</code>. </p>