docs: public HystrixObservableCommand.Setter buildObservableCommandSetter() {
          HystrixObservableCommand.Setter setter = HystrixObservableCommand.Setter
                  .withGroupKey(HystrixCommandGroupKey.Factory.asKey(groupKey))
                  .andCommandKey(HystrixCommandKey.Factory.asKey(commandKey));
          try {
              setter.andCommandPropertiesDefaults(HystrixPropertiesManager.initializeCommandProperties(commandProperties));
          } catch (IllegalArgumentException e) {
              throw new HystrixPropertyException("Failed to set Command properties. " + getInfo(), e);
          }
          return setter;
      }