 Mixer private key will be used.</p></td></tr><tr id=Mutual-client_certificate><td><code>clientCertificate</code></td><td><code>string</code></td><td><p>The path to the file holding client certificate for mutual TLS. If omitted, the
default Mixer certificates will be used.</p></td></tr><tr id=Mutual-ca_certificates><td><code>caCertificates</code></td><td><code>string</code></td><td><p>The path to the file holding additional CA certificates that are needed to
verify the presented adapter certificates. By def