dSignature">&lt;T&gt;&nbsp;T&nbsp;unwrap&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Class.html?is-external=true" title="class or interface in java.lang" class="externalLink">Class</a>&lt;T&gt;&nbsp;cls)</pre>
<div class="block">Return an object of the specified type to allow access to the
 provider-specific API. If the provider's EntityManagerFactory
 implementation does not support the specified class, the
 PersistenceException is thrown.</div>
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<dt><span cla