type DurationBundle … const EventuallyTimeoutEnvVarName … const EventuallyPollingIntervalEnvVarName … const ConsistentlyDurationEnvVarName … const ConsistentlyPollingIntervalEnvVarName … const EnforceDefaultTimeoutsWhenUsingContextsEnvVarName … func FetchDefaultDurationBundle() DurationBundle { … } func durationFromEnv(key string, defaultDuration time.Duration) time.Duration { … } func toDuration(input interface{ … }