public boolean tlsAllowUnsafeCiphers() {
        return get(TLS_ALLOW_UNSAFE_CIPHERS);
    }
Returns whether to allow the bad cipher suites listed in
<a href="https://datatracker.ietf.org/doc/html/rfc7540#appendix-A">RFC7540</a> for TLS handshake.

<p>Note that enabling this option increases the security risk of your connection.
Use it only when you must communicate with a legacy system that does not support
secure cipher suites.
See <a href="https://datatracker.ietf.org/doc/html/rfc7540#section-9.2.2">Section 9.2.2, RFC7540</a> for
more information.
core/src/main/java/com/linecorp/armeria/client/ClientFactoryOptions.java