public ClientConnectionTimingsBuilder pendingAcquisitionStart() {
        if (pendingAcquisitionStartTimeMicros == 0 && !pendingAcquisitionEndSet) {
            pendingAcquisitionStartTimeMicros = SystemInfo.currentTimeMicros();
            pendingAcquisitionStartNanos = System.nanoTime();
        }
        return this;
    }
Sets the time when the client started to wait for the completion of an existing connection attempt
in order to use one connection for HTTP/2.
core/src/main/java/com/linecorp/armeria/common/logging/ClientConnectionTimingsBuilder.java