public ClientConnectionTimingsBuilder tlsHandshakeStart() {
        tlsHandshakeStartTimeMicros = SystemInfo.currentTimeMicros();
        tlsHandshakeStartNanos = System.nanoTime();
        return this;
    }
Sets the time when the client started to TLS handshake to a remote peer.
core/src/main/java/com/linecorp/armeria/common/logging/ClientConnectionTimingsBuilder.java