public CircuitBreakerBuilder circuitOpenWindowMillis(long circuitOpenWindowMillis){
  circuitOpenWindow(Duration.ofMillis(circuitOpenWindowMillis));
  return this;
}

public CircuitBreakerBuilder circuitOpenWindowMillis ( long circuitOpenWindowMillis ) { circuitOpenWindow ( Duration . ofMillis ( circuitOpenWindowMillis ) ) ; return this ; }
sets the duration of open state .
