code: public Observable<OutboundRuleInner> getAsync(String resourceGroupName, String loadBalancerName, String outboundRuleName) {
          return getWithServiceResponseAsync(resourceGroupName, loadBalancerName, outboundRuleName).map(new Func1<ServiceResponse<OutboundRuleInner>, OutboundRuleInner>() {
              @Override
              public OutboundRuleInner call(ServiceResponse<OutboundRuleInner> response) {
                  return response.body();
              }
          });
      }
docs: Gets the specified load balancer outbound rule.
  
  @param resourceGroupName The name of the resource group.
  @param loadBalancerName The name of the load balancer.
  @param outboundRuleName The name of the outbound rule.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the observable to the OutboundRuleInner object