ecurity">PrivateKey</a>&nbsp;key,
                   <a href="https://docs.oracle.com/javase/8/docs/api/java/security/cert/Certificate.html?is-external=true" title="class or interface in java.security.cert">Certificate</a>[]&nbsp;chain)</pre>
<div class="block">Used by the CallbackHandler to set the requested private key and the corresponding certificate chain within the
 Callback.

 <p>
 If the requested private key or chain could not be found, then both values must be set to null.</div>
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