title: How can I add a private key to X509Certificate2 after I have already added the public key?
body: <p>My steps are:</p>
  
  <ol>
  <li><p>Create <code>X509Certificate2</code> with public key:</p>
  
  <pre><code>X509Certificate2 clientCertificate = new X509Certificate2("public key certificate blob as byte[]");
  </code></pre></li>
  <li><p>How do I want to load the private key blob to <code>clientCertificate</code>?</p></li>
  </ol>