public CircuitBreakerBuilder circuitOpenWindow(Duration circuitOpenWindow) {
        requireNonNull(circuitOpenWindow, "circuitOpenWindow");
        if (circuitOpenWindow.isNegative() || circuitOpenWindow.isZero()) {
            throw new IllegalArgumentException(
                    "circuitOpenWindow: " + circuitOpenWindow + " (expected: > 0)");
        }
        this.circuitOpenWindow = circuitOpenWindow;
        return this;
    }
Sets the duration of OPEN state.
Defaults to {@value #DEFAULT_CIRCUIT_OPEN_WINDOW_SECONDS} seconds if unspecified.
core/src/main/java/com/linecorp/armeria/client/circuitbreaker/CircuitBreakerBuilder.java