public Builder setHandshakeTimeout(final long handshakeTimeout, final TimeUnit timeUnit) {
            this.handshakeTimeout = Timeout.of(handshakeTimeout, timeUnit);
            return this;
        }
@return this instance.
@see #setHandshakeTimeout(Timeout)
httpclient5/src/main/java/org/apache/hc/client5/http/config/TlsConfig.java