@Deprecated
    @Override
    public ClientFactoryBuilder tls(PrivateKey key, X509Certificate... keyCertChain) {
        return (ClientFactoryBuilder) TlsSetters.super.tls(key, keyCertChain);
    }
Configures SSL or TLS for client certificate authentication with the specified cleartext
{@link PrivateKey} and {@link X509Certificate} chain.

@deprecated Use {@link #tls(TlsKeyPair)} or {@link #tlsProvider(TlsProvider)} instead.
core/src/main/java/com/linecorp/armeria/client/ClientFactoryBuilder.java