WithErrorPercentThreshold sets hystrix error percent threshold.

WithFallbackFunc sets the fallback function.

WithMaxConcurrentRequests sets hystrix max concurrent requests.

WithRequestVolumeThreshold sets hystrix request volume threshold.

WithSleepWindow sets hystrix sleep window.

WithStatsDCollector exports hystrix metrics to a statsD backend.

WithTimeout sets hystrix timeout.

Option represents the hystrix client options.