src/client/client.go
func (c *cachedLoader) MustGetDuration(key string) time.Duration {
	s := c.MustGetString(key)
	ret, err := time.ParseDuration(s)
	if err != nil {
		panic(fmt.Sprintf("Could not parse config (%s) into a duration: %v", key, err))
	}
	return ret
}
func (c *cachedLoader) MustGetDuration(key string) time.Duration {
	s := c.MustGetString(key)
	ret, err := time.ParseDuration(s)
	if err != nil {
		panic(fmt.Sprintf("Could not parse config (%s) into a duration: %v", key, err))
	}
	return ret
}
// MustGetDuration fetches the config and parses it into a duration.  Panics on failure.